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WEEKLY MINERAL & GEM AUCTIONS !

Welcome to our mineral auction website. Thousands of mineral specimens sold - including fluorite, rhodochrosite and many other rocks and minerals. Please read the bidding rules and regulations before bidding. Enjoy!

If you're new to the site, you can register here.


Over 60,000 fine minerals, crystals and gemstones sold since 2002!
New mineral auctions are posted each week.


Welcome to the largest and most diverse single-source site for fine minerals and mineral specimens at auction. This is an inventory LIQUIDATION venue adjunct to our gallery site

The Arkenstone, www.iRocks.com

If you're looking for a specific mineral, locality, or price point, visit www.iRocks.com and browse our extensive selection of fine minerals, crystals, and gemstones for sale.

 

 

Current Auctions

SPECIAL HOLIDAY LARGE CABINET MINERAL SPECIMEN LIQUIDATION AUCTION - Ends Tuesday November 21, 2017

Specimens Available: 15

Ends TUESDAY, November 21st, 2017 , at 6:30 PM (Central Time)

A special auction that we put together for the holidays featuring LARGE CABINET display specimens. Over the years we like to do themed auctions, especially during the holiday season, and this was a great opportunity for us to put together a selection of big showy pieces that we’ve culled from the inventory and collections that we’ve purchased recently. Plenty of good quality specimens that will probably end up being great bargains for you bidders.

PLEASE NOTE: Due to the size and weight of each individual specimen, there will be an ADDITIONAL SHIPPING CHARGE per piece, so please keep this in mind. If you have any questions, please ask before placing your bids. Thank you!

FINE MINERAL SPECIMEN AUCTIONS (set 1 of 2) - ends SATURDAY, November 25th

Specimens Available: 56

FINE MINERAL SPECIMEN AUCTIONS (set 1 of 2) - ends SATURDAY, November 25th Ends SATURDAY, November 25th, after our TG Holiday
at 6:30 PM (Central Time Zone)

TWO PAGES OF AUCTIONS: Up for auction is a very broad mix of minerals including specimens worth over $1000 - all starting at $10 bids, from the last 200 years and from many countries and places...the results of our large collection purchases over the last few years! Look for featured specimens from the Kay Robertson collection. Her collection is loaded with old classics and esoteric pieces from all over that you cannot find on the market today!


Some of the highlights from this week’s include:
1. Fine large Riemasvaak AFRICAN GREEN FLUORITE
2. Selection of TSUMEB minerals
3. GARNETS from the Bill Larson Collection
4. Unusual and fine large Brazil QUARTZ crystals from the Paul Zerfass Collection
5. RHODOCHROSITE from the W.S. Logan Collection
6. Classic and rarities from the Kay Robertson Collection

FINE MINERAL COLLECTION and INVENTORY LIQUIDATION AUCTION (set 2 of 2) - FEATURING GERMAN CLASSICS FROM THE KAY ROBERTSON COLLECTION - end SATURDAY November 25th, 2017

Specimens Available: 60

Ends SATURDAY, November 25th, 2017
at 6:45 PM (Central Time Zone)

We're changing things up for the next couple weeks regarding the second mineral auction. We still have our usual mix of rarities, unusual pieces, gem crystals, classics and display specimens, but the second page of the auction will feature many German classics and other pieces from the Kay Robertson collection. We're putting together this special set to coincide with the Munich Show along with the large 50+ page spread featuring Kay's German classics in the German Mineral Magazine "Mineralien Velt"! Look for well-known classics from historic localities along with rarities and esoteric / oddball pieces from all over.

In addition to Kay's classics, you will still find specimens from various collections we've obtained including Willard Wulff, Francesco Bedogné, Paul Zerfass, along with Herb Obodda dealer stock. Look here for the not so typical mineral specimens along with plenty of your favorites. We don't just offer the "standard 20 species", but an eclectic mix of specimens that appeal to everybody!


Some of the highlights from this week’s auction include:

1. Classic AZURITE with MALACHITE from Tsumeb
2. A new specimen of unusual and attractive pink MANGANOAN CALCITE from Bulgaria
3. Rare CARBONATE-RICH HYDROXYLAPATITE with MAGNETITE from Bolivia
4. A really cool CUPRITE with NATIVE SILVER and NATIVE COPPER from the Ray Mine in Arizona
5. Newly Mine rare "BLOOD VESSEL" HYALITE OPAL from Mexico
6. A hard to find piece of the La Lande METEORITE from New Mexico (ex Miguel Romero Collection)
7. PAGE 2 features GERMAN CLASSICS and other minerals from the Kay Robertson Collection!

SPECIAL $100 and $50 RESERVE GEMSTONE AUCTION - Ends SATURDAY November 25th, 2017

Specimens Available: 15

Ends SATURDAY, November 9th, 2017 at 7:00 PM (Central Time Zone)

ATTENTION! We are pleased to announce that we have purchased a notable collection / supply from a retiring gem dealer of beautiful mixed stones, cabochons and jewelry which we will be offering at liquidation prices!!

Keep watching every week for a great mix and new variety of good quality gemstones to appear over the following months. Reserve prices will typically be $100 and $50 on the better material every other week, with $25 and $10 reserves on alternating weeks.
Questions about Gems?: CONTACT Gem admin Brian Kosnar: click here

SPECIAL HOLIDAY JEWELRY AUCTION - Ends SATURDAY November 25, 2017

Specimens Available: 15

Ends Saturday, November 25th, 2015 at 7:15 PM (Central Time)
With the upcoming holidays, it’s time for another one of our popular assortments of jewelry items. Plenty of great, one-of-a-kind pieces with fair and reasonable starting reserve bids. Buy these items now and take care of your holiday shopping early! We have a great selection of earrings, pendants and bracelets, and even multi-piece sets, so be sure to look at everything.
Questions about Gems or Jewelry?: CONTACT Gem admin Brian Kosnar: click here


Closed Auctions

$25 and $10 RESERVE GEMSTONE CONSIGNMENT AUCTION - Ends November 16, 2017

Ends Thursday, November 9th, 2017 at 7:00 PM (Central Time Zone)

ATTENTION! We are pleased to announce that we have purchased a notable collection / supply from a retiring gem dealer of beautiful mixed stones, cabochons and jewelry which we will be offering at liquidation prices!!

Keep watching every week for a great mix and new variety of good quality gemstones to appear over the following months. Reserve prices will typically be $100 and $50 on the better material every other week, with $25 and $10 reserves on alternating weeks.
Questions about Gems?: CONTACT Gem admin Brian Kosnar: click here

FINE MINERAL COLLECTION and INVENTORY LIQUIDATION AUCTION (set 2 of 2) - FEATURING GERMAN CLASSICS FROM THE KAY ROBERTSON COLLECTION - end November 16th, 2017

Ends Thursday, November 16th, 2017
at 6:45 PM (Central Time Zone)

We're changing things up for the next couple weeks regarding the second mineral auction. We still have our usual mix of rarities, unusual pieces, gem crystals, classics and display specimens, but the second page of the auction will feature many German classics and other pieces from the Kay Robertson collection. We're putting together this special set to coincide with the Munich Show along with the large 50+ page spread featuring Kay's German classics in the German Mineral Magazine "Mineralien Velt"! Look for well-known classics from historic localities along with rarities and esoteric / oddball pieces from all over.

In addition to Kay's classics, you will still find specimens from various collections we've obtained including Willard Wulff, Francesco Bedogné, Paul Zerfass, along with Herb Obodda dealer stock. Look here for the not so typical mineral specimens along with plenty of your favorites. We don't just offer the "standard 20 species", but an eclectic mix of specimens that appeal to everybody!


Some of the highlights from this week’s auction include:

1. A superb cabinet matrix specimen of green FLUORITE from the Huanzala Mine in Peru
2. Excellent HAMBERGITE on matrix from Pakistan (ex Obodda)
3. GOLD on QUARTZ from the Timmins area, Ontario, Canada
4. Classic twinned red CINNABAR crystals on matrix from the Nikitovka Hg Deposit, Ukraine (ex Kay Robertson)
5. One of the new and interesting PURPLE QUARTZ ("Grape" Chalcedony / Agate) specimens from Indonesia
6. Beautiful reddish-orange SCHEELITE with GOSEHNITE ("floater" specimen) from Xuebaoding, China
7. PAGE 2 features GERMAN CLASSICS and other minerals from the Kay Robertson Collection!

FINE MINERAL SPECIMEN AUCTIONS (set 1 of 2) - end Nov 16, 2017

Ends Thursday, November 16th, 2017
at 6:30 PM (Central Time Zone)

Up for auction is a very broad mix of minerals including specimens worth over $1000 - all starting at $10 bids, from the last 200 years and from many countries and places...the results of our large collection purchases over the last few years! Look for featured specimens from the Kay Robertson collection. Her collection is loaded with old classics and esoteric pieces from all over that you cannot find on the market today!


Some of the highlights from this week’s include:
1. Classics and rarities from the Kay Robertson & Paul Zerfass Collections
2. EMERALD NEW FIND from Ethiopia
3. Superb, rare SWISS GEM TITANITE TWIN and a RUSSIAN PHENAKITE (*ex. Robertson)
4. Large Bisbee MALACHITE circa 1900 - over 100 years old!
5. Rare ANGLESITE from the Bunker Hill Mine
6. Classic RHODOCHROSITE from the Sunnyside Mine
7. Gem BERYL from Brazil

SPECIAL $100 and $50 RESERVE GEMSTONE AUCTION - Ends November 9th, 2017

Ends Thursday, November 9th, 2017 at 7:00 PM (Central Time Zone)

ATTENTION! We are pleased to announce that we have purchased a notable collection / supply from a retiring gem dealer of beautiful mixed stones, cabochons and jewelry which we will be offering at liquidation prices!!

Keep watching every week for a great mix and new variety of good quality gemstones to appear over the following months. Reserve prices will typically be $100 and $50 on the better material every other week, with $25 and $10 reserves on alternating weeks.
Questions about Gems?: CONTACT Gem admin Brian Kosnar: click here

FINE MINERAL COLLECTION and INVENTORY LIQUIDATION AUCTION (set 2 of 2) - FEATURING GERMAN CLASSICS FROM THE KAY ROBERTSON COLLECTION - end November 9th, 2017

Ends Thursday, November 9th, 2017
at 6:45 PM (Central Time Zone)

We're changing things up for the next couple weeks regarding the second mineral auction. We still have our usual mix of rarities, unusual pieces, gem crystals, classics and display specimens, but the second page of the auction will feature many German classics and other pieces from the Kay Robertson collection. We're putting together this special set to coincide with the Munich Show along with the large 50+ page spread featuring Kay's German classics in the German Mineral Magazine "Mineralien Velt"! Look for well-known classics from historic localities along with rarities and esoteric / oddball pieces from all over.

In addition to Kay's classics, you will still find specimens from various collections we've obtained including Willard Wulff, Francesco Bedogné, Paul Zerfass, along with Herb Obodda dealer stock. Look here for the not so typical mineral specimens along with plenty of your favorites. We don't just offer the "standard 20 species", but an eclectic mix of specimens that appeal to everybody!


Some of the highlights from this week’s include:
1. A trio of RHODOCHROSITE specimens from the Sweet Home Mine collected in the late 1970s by Rich Kosnar
2. Unusual "caterpillar"-esque SMITHSONITE from Berg Aukus, Namibia (ex Kay Robertson Collection)
3. Rare AQUAMARINE / MORGANITE (rare bicolor crystal) with twinned ALBITE from Pakistan
4. A superb old classic pseudomorph of TENNANTITE after AZURITE from Tsumeb (ex Kay Robertson Collection)
5. Classic red VANADINITE from the Apache Mine in Arizona (ex Les Presmyk and Tony Potucek Collections)
6. Excellent, sharp, brilliant cyclic twinned CASSITERITE on matrix from Panasqueira (ex Francesco Bedogné Collection)
7. Attractive and interesting replacement of MIMETITE after CERUSSITE from Tsumeb (ex Kay Robertson Collection)
8. PAGE 2 features 15 GERMAN CLASSICS and other minerals from the Kay Robertson Collection!

FINE MINERAL COLLECTION LIQUIDATION AUCTION (set 1 of 2) - end Nov 9, 2017

Ends Thursday, November 9 2017
at 6:30 PM (Central Time Zone)

We try to provide the widest mix of fine mineral specimens, rarities and gems! Look for pieces mixed in from various collections we've obtained including the massive mineral collections of Kay Robertson and Paul Zerfass, along with dealers' inventories. Keep an out for DOZENS OF RARE OLD CLASSICS ACQUIRED IN THE 1960s-1980s FROM THE KAY ROBERTSON COLLECTION this week and in the coming weeks! These massive collections will not be built again, and this is a unique window to acquire things not on the market so often.


Some of the highlights from this week’s include:

1. Rare gem AQUAMARINE from Madagascar
2. Large gemmy INDICOLITE TOURMALINE from Brazil
3. Rare Utah FLUORITE and OPAL - Tiffany Stone
4. EMERALD from South Africa
5. Selection of TOURMALINES
6. Old large rare Bolivia CASSITERITE stream tin
7. Fine suite of DIAMONDS

$25 and $10 RESERVE GEMSTONE CONSIGNMENT AUCTION - Ends November 2, 2017

Ends November 2nd, 2017 at 7:00 PM (Central Time)

Here we have one of our popular combined auction of mixed gems of varying reserve prices
($25 and $10 respectively this week)
Unique and attractive items as always - check them out !!
Questions about Gems?: CONTACT Gem admin Brian Kosnar: click here

FINE MINERAL COLLECTION and INVENTORY LIQUIDATION AUCTION (set 2 of 2) - FEATUING A PAGE OF GERMAN CLASSICS FROM THE KAY ROBERTSON COLLECTION - end November 2nd, 2017

Ends Thursday, November 2nd, 2017
at 6:45 PM (Central Time Zone)

We're changing things up for the next couple weeks regarding the second mineral auction. We still have our usual mix of rarities, unusual pieces, gem crystals, classics and display specimens, but the second page of the auction will only feature German and other European classics from the Kay Robertson collection. We're putting together this special set to coincide with the Munich Show along with the large 50+ page spread featuring Kay's German classics in the German Mineral Magazine "Mineralien Velt"! Look for well-known classics from historic localities along with rarities and esoteric / oddball pieces from all over this famous mineral-producing nation!

In addition to Kay's classics, you will still find specimens from various collections we've obtained including Willard Wulff, Francesco Bedogné, Paul Zerfass, along with Herb Obodda dealer stock. Look here for the not so typical mineral specimens along with plenty of your favorites. We don't just offer the "standard 20 species", but an eclectic mix of specimens that appeal to everybody!


Some of the highlights from this week’s include:
1. A SUPERB and LARGE (5 cm+) specimen of ANDORITE from the San Jose Mine, Bolivia
2. Big electric green, gemmy, sharp lustrous crystals of DIOPTASE on matrix from Kimbedi, Rep. of Congo
3. GEM quality yellow-green TRIPHANE SPODUMENE from the Pala Chief Mine in San Diego County, California
4. Rare matrix specimen of REALGAR from the Royal Reward Mine in Washington state (ex Francesco Bedogné Collection)
5. Beautiful scepter and "reverse" scepter habit AMETHYST crystals on matrix from Bombori, Bolivia
6. An unusual pseudomorph specimen of QUARTZ REPLACING TOURMALINE (inside out!) from Brazil
7. PAGE 2 is FILLED with GERMAN CLASSICS from the Kay Robertson Collection!

FINE MINERAL COLLECTION LIQUIDATION AUCTION (set 1 of 2) - end Nov 2nd, 2017

Ends Thursday, October 26, 2017
at 6:30 PM (Central Time Zone)

A great mix of classic, contemporary mineral specimens, rarities and gem crystals! Look for pieces mixed in from various collections we've obtained including the massive mineral collections of Kay Robertson and Paul Zerfass, along with dealers' inventories. Keep an out for more Kay Robertson Collection pieces this week and in the coming weeks dating mostly from the 1950s-1970s!


Some of the highlights from this week’s include:

1. Large Quebec MICROCLINE xl
2. Rare FLUORITE & AMETHYST combo from Riemasvaak
3. COLORADO rarities from the Kay Robertson Collection
4. Large New Jersey PREHNITE pseudomorph from the Dr. Ed David Collection
5. Rich old English PYROMORPHITE from the Carl Bosch & Smithsonian Collections
6. Fine large Arizona WULFENITE from the Total Wreck Mine
7. Rare 8-piece set of Brazil CHRYSOBERYLS
8. Fine fancy colored DIAMOND trio
9. ST. ANDREASBERG classics and rarities from the Kay Robertson Collection
10. Paul Zerfass and Kay Robertson Collection classics and rarities
11. Classic old St. Andreasberg CALCITE

SPECIAL $100 and $50 RESERVE GEMSTONE AUCTION - Ends October 26\th, 2017

Ends Thursday, October 26th, 2017 at 7:00 PM (Central Time Zone)

ATTENTION! We are pleased to announce that we have purchased a notable collection / supply from a retiring gem dealer of beautiful mixed stones, cabochons and jewelry which we will be offering at liquidation prices!!

Keep watching every week for a great mix and new variety of good quality gemstones to appear over the following months. Reserve prices will typically be $100 and $50 on the better material every other week, with $25 and $10 reserves on alternating weeks.
Questions about Gems?: CONTACT Gem admin Brian Kosnar: click here

FINE MINERAL COLLECTION and INVENTORY LIQUIDATION AUCTION (set 2 of 2) - end October 26th, 2017

Ends Thursday, October 26th, 2017
at 6:45 PM (Central Time Zone)

This week's auction is filled with new material we picked up over the last few months along with rarities, unusual pieces, gem crystals, classics and display specimens. You'll even find a few fossils, carving and gemstones mixed in every now and then. Look for pieces mixed in from various collections we've obtained including Willard Wulff, Kay Robertson, Francesco Bedogné, and Paul Zerfass, along with dealers' inventories. Look here for the not so typical mineral specimens along with plenty of your favorites. We don't just offer the "standard 20 species", but an eclectic mix of specimens that appeal to everybody! Enjoy!


Some of the highlights from this week’s include:
1. Rarely seen GOLD on QUARTZ from the famous Homestake Mine in South Dakota
2. A gemmy pink and green TOURMALINE crystal from the Cruzeiro Mine, Brazil
3. Impressive, notably SHARP and GEMMY colorless PETALITE crystal from Afghanistan (ex Herb Obodda)
4. Beautifully crystallized, brilliant PYRITE crystals from the Nanisivik Mine, Baffin Island, Canada
5. Rare TURQUOISE pseudomorph after APATITE from the La Caridad Mine, Mexico
6. Very sharp, well-formed crystals of deep red TANATALITE-(Mn) from Murrua, Alto Ligonha, Mozambique 7. Rarities include POTOSIITE with FRANCKEITE, ZARATITE on CHROMITE, LABUNTSOVITE-(Mn), and specimens of CARPHOLITE, PALENZONAITE and NATROCHALCITE all from the type locality!

FINE MINERAL COLLECTION LIQUIDATION AUCTION (set 1 of 2) - end Oct 26th, 2017

Ends Thursday, October 26, 2017
at 6:30 PM (Central Time Zone)

A great mix of classic, contemporary mineral specimens, rarities and gem crystals! Look for pieces mixed in from various collections we've obtained including the massive mineral collections of Kay Robertson and Paul Zerfass, along with dealers' inventories. We don't just offer the "standard 20 species", but an eclectic mix of specimens that appeal to everybody! Enjoy! NOTE- SOON WE WILL FLOW MANY MORE KAY ROBERTSON COLLECTION PIECES IN, DATING MOSTLY TO THE 1950s-1970s!


Some of the highlights from this week’s include:

1. Fine matrix INDICOLITE TOURMALINE
2. Large Ajo COPPER
3. Strange JASPER slab from Madagascar
4. Rare large MONTEBRASITE twin
5. Rarities and classic from the Kay Roberston & Paul Zerfass Collections
6. Large Peru CALCITE
7. Superb New Jersey CHALCOCITE from the Dr. Ed David Collection

SPECIAL BRAZILIAN MINERAL COLLECTION PREVIEW AUCTION - ends TUESDAY, October 24th, 2017

Ends TUESDAY October 24th, 2017
at 6:30 PM (Central Time Zone)

SPECIAL ANNOUNCEMENT! We are pleased to announce that we have acquired the Brazilian mineral collection of Rolando Gioia (a contributor to new definitive book on Brazilian minerals: "Minerais e Pedras Preciosas do Brasil"). The collection is full of attractive, colorful, rare and unusual specimens from major localities to small occurrences throughout this mineral-rich country. This 30 piece set is a special preview of what's to come. In the coming weeks we will be mixing in specimens from this collection into the regular weekly liquidation auctions, so stay tuned!

$25 and $10 RESERVE GEMSTONE CONSIGNMENT AUCTION - Ends October 19th, 2017

Ends October 19th, 2017 at 7:00 PM (Central Time)

Here we have one of our popular combined auction of mixed gems of varying reserve prices
($25 and $10 respectively this week)
Unique and attractive items as always - check them out !!
Questions about Gems?: CONTACT Gem admin Brian Kosnar: click here

FINE MINERAL COLLECTION and INVENTORY LIQUIDATION AUCTION (set 2 of 2) - end October 19th, 2017

Ends Thursday, October 19th, 2017
at 6:45 PM (Central Time Zone)

This week's auction is filled with new material we picked up over the last few months along with rarities, unusual pieces, gem crystals, classics and display specimens. You'll even find a few fossils, carving and gemstones mixed in every now and then. Look for pieces mixed in from various collections we've obtained including Willard Wulff, Kay Robertson, Francesco Bedogné, and Paul Zerfass, along with dealers' inventories. Look here for the not so typical mineral specimens along with plenty of your favorites. We don't just offer the "standard 20 species", but an eclectic mix of specimens that appeal to everybody! Enjoy!


Some of the highlights from this week’s include:
1. One of the newly mined PURPLE CHALCEDONY / AGATE ("Grape Chalcedony" / "Graph Agate") from Indonesia
2. A RARE and VERY GOOD SIZED DIAMOND CRYSTAL showing cube, octahedron and dodecahedron faces
3. Fine, sharp, lustrous GEM QUALITY green cubic FLUORITE from the Xianghualing Mine in China (ex Paul Zerfass Collection)
4. Matrix specimen of TWINNED FERBERITE from the Tasna Mine, Bolivia
5. A cool two piece set of WITHERITE and STRONTIANITE from Hardin County, Illinois (ex Franceso Bedogne Collection)
6. A notably GEMMY / TRANSLUCENT crystal of AMAZONITE on SMOKY QUARTZ from Afghanistan!

FINE MINERAL COLLECTION LIQUIDATION AUCTION (set 1 of 2) - end Oct 19th, 2017

Ends Thursday, October 19th, 2017
at 6:30 PM (Central Time Zone)

A great mix of classic, contemporary mineral specimens, rarities and gem crystals! Look for pieces mixed in from various collections we've obtained including the massive mineral collections of Kay Robertson and Paul Zerfass, along with dealers' inventories. We don't just offer the "standard 20 species", but an eclectic mix of specimens that appeal to everybody! Enjoy!


Some of the highlights from this week’s include:

1. Rare old 1835 Chessy AZURITE fromn Colonel Neeld collection circa 1835 !
2. Old Himalaya Mine TOURMALINES
3. Classic & rarities from the Kay Robertson Collection from nearly 100 years of collecting! 4. Large Tsumeb CALCITE & Chinese FLUORITE
5. Fine large Elmwood CALCITE & BARITE
6. Old large Michigan COPPER and a Huge old UTAH VARISCITE

SPECIAL $100 and $50 RESERVE GEMSTONE AUCTION - Ends October 12th, 2017

Ends Thursday, October 12th, 2017 at 7:00 PM (Central Time Zone)

ATTENTION! We are pleased to announce that we have purchased a notable collection / supply from a retiring gem dealer of beautiful mixed stones, cabochons and jewelry which we will be offering at liquidation prices!!

Keep watching every week for a great mix and new variety of good quality gemstones to appear over the following months. Reserve prices will typically be $100 and $50 on the better material every other week, with $25 and $10 reserves on alternating weeks.
Questions about Gems?: CONTACT Gem admin Brian Kosnar: click here

FINE MINERAL COLLECTION and INVENTORY LIQUIDATION AUCTION (set 2 of 2) - end October 12th, 2017

Ends Thursday, October 12th, 2017
at 6:45 PM (Central Time Zone)

This week's auction is filled with new material we picked up over the last few months along with rarities, unusual pieces, gem crystals, classics and display specimens. You'll even find a few fossils, carving and gemstones mixed in every now and then. Look for pieces mixed in from various collections we've obtained including Willard Wulff, Kay Robertson, Francesco Bedogné, and Paul Zerfass, along with dealers' inventories. Look here for the not so typical mineral specimens along with plenty of your favorites. We don't just offer the "standard 20 species", but an eclectic mix of specimens that appeal to everybody! Enjoy!


Some of the highlights from this week’s include:
1. HISTORIC old time PRE-TSUMEB DIOPTASE specimen from the Guchab-Rodgerberg area, Namibia
2. New find of gemmy "phantom" cubic FLUORITE from Baluchistan, Pakistan
3. One of the new and unusual HYALITE / "BLOOD VESSEL OPALS" from San Luis Potosi, Mexico
4. An old classic and historic specimen of epitaxial HEMAITE on DOLOMITE from Frizington, England (ex Kay Robertson and three other old collections!)
5. A cool pseudomorph of TOURMALINE partially replaced by QUARTZ from the inside out(!) from Brazil
6. Rarities include, SCAINIITE, ZANAZZIITE, KAMPFITE, DAWSONITE, LANGITE and a RARE piece of HETEROGENITE from Tsumeb!!

FINE MINERAL COLLECTION LIQUIDATION AUCTION (set 1 of 2) - end Oct 12th, 2017

Ends Thursday, October 12th, 2017
at 6:30 PM (Central Time Zone)

A great mix of classic, contemporary mineral specimens, rarities and gem crystals! Look for pieces mixed in from various collections we've obtained including the massive mineral collections of Kay Robertson and Paul Zerfass, along with dealers' inventories. We don't just offer the "standard 20 species", but an eclectic mix of specimens that appeal to everybody! Enjoy!


Some of the highlights from this week’s include:

1. Fine old 1800s GLAUCODOT
2. Classic and rarities from the Kay Robertson & Zerfass Collections
3. Unusual large TOURMALINE
4. RARE old Michigan COPPER drill core
5. Large classic old English ARAGONITE
6. New Find of Chinese HEMATITE
7. Rare old (1857!) Mexico SULFUR
8. Large Chinese FLUORITE

$25 and $10 RESERVE GEMSTONE CONSIGNMENT AUCTION - Ends October 5, 2017

Ends October 5th, 2017 at 7:00 PM (Central Time)

Here we have one of our popular combined auction of mixed gems of varying reserve prices
($25 and $10 respectively this week)
Unique and attractive items as always - check them out !!
Questions about Gems?: CONTACT Gem admin Brian Kosnar: click here

POST-DENVER SHOW FINE MINERAL COLLECTION and INVENTORY LIQUIDATION AUCTION (set 2 of 2) - end October 5th, 2017

Ends Thursday, October 5th, 2017
at 6:45 PM (Central Time Zone)

This week's auction is filled with new material we picked up over the last few months along with rarities, unusual pieces, gem crystals, classics and display specimens. You'll even find a few fossils, carving and gemstones mixed in every now and then. Look for pieces mixed in from various collections we've obtained including Willard Wulff, Kay Robertson, Francesco Bedogné, and Paul Zerfass, along with dealers' inventories. Look here for the not so typical mineral specimens along with plenty of your favorites. We don't just offer the "standard 20 species", but an eclectic mix of specimens that appeal to everybody! Enjoy!


Some of the highlights from this week’s include:
1. Classic gemmy blue INDICOLITE TOURMALINE from Brazil with dark blue-purple-black colored "caps"
2. Beautiful free-standing "spray" of ERYTHRITE on matrix from Morocco
3. Gorgeous, GEM quality, very sharp, highly lustrous, "phantom" cubes of FLUORITE with Barite and Calcite from Spain (ex Paul Zerfass Collection)
4. An old classic and historic pseudomorph of blue-lilac CHALCEDONY replacing FLUORITE from Trestia, Romania (Transylvania) (ex Kay Robertson and BRITISH MUSEUM Collections!)
5. Gemmy reddish-pink rhombohedron of RHODOCHROSITE from the Moose Mine in Gilpin County, Colorado
6. RARE gemmy, intensely colored "Trapiche" Habit RUBY crystal from Myanmar (Burma)
7. Wonderful, rare "butterfly"-twinned crystals of PHOSPHOPHYLLITE on matrix from Bolivia!

POST- DENVER SHOW FINE MINERAL LIQUIDATION AUCTION (set 1 of 2) - end Oct 5th, 2017

Ends Thursday, October 5th, 2017
at 6:30 PM (Central Time Zone)

A great mix of classic, contemporary mineral specimens, rarities and gem crystals! Look for pieces mixed in from various collections we've obtained including Kay Robertson, Conklin & Obodda, and Paul Zerfass, along with dealers' inventories. We don't just offer the "standard 20 species", but an eclectic mix of specimens that appeal to everybody! Enjoy!


Some of the highlights from this week’s include:
1. Gem INDICOLITE TOURMALINE ex Meieran Collection
2. Matrix CARROLLITE - 1990's finds!
3. Fine CUPRITE & CHRYSOCOLLA from the 1990s
4. AZURITE from the famous 1994 Tsumeb Easter Pocket !
5. Rarities and classics from the Kay Robertson, Conklin, Zerfass & Murphy Collections
6. TEXAS rarites!
7. Superb LONDONITE
8. Gem WULFENITE from the Pure Potential Mine

SPECIAL $100 and $50 RESERVE GEMSTONE AUCTION - Ends September 28th, 2017

Ends Thursday, September 28th, 2017 at 7:00 PM (Central Time Zone)

ATTENTION! We are pleased to announce that we have purchased a notable collection / supply from a retiring gem dealer of beautiful mixed stones, cabochons and jewelry which we will be offering at liquidation prices!!

Keep watching every week for a great mix and new variety of good quality gemstones to appear over the following months. Reserve prices will typically be $100 and $50 on the better material every other week, with $25 and $10 reserves on alternating weeks.
Questions about Gems?: CONTACT Gem admin Brian Kosnar: click here

POST-DENVER SHOW FINE MINERAL COLLECTION LIQUIDATION AUCTIONS - end Thursday, Sept. 28, 2017 (set 1 of 2)

Ends Thursday, Sept. 28, 2017
at 6:30 PM (Central Time Zone)

TWO PAGES filled with a diverse mix of classic, contemporary material, gem crystals, rarities and oddball pieces! Most of the specimens here are from old stashes and purchased dealer inventories that you cannot as easily find in today's market as in the past.

We are honored to announce the purchase of several large collections including the fantastic Kay Robertson collection of 10,000 specimens, filled with European treasures and old classics accumulated since she started collecting in 1928 (see our website for more information: http://www.irocks.com/kay-robertson-a-treasure-in-the-mineral-collecting-world)!


Some of the highlights from this week’s include:
1. Classic and rarities from the Kay Robertson and Dave Stoudt Collections
2. Large MALACHITE "eyes"
3. Rare ILVAITE w/ FLUORITE from Santa Eulalia
4. Large and rare FAIRFIELDITE
5. Old large English FLUORITE and QUARTZ
6. Rare old CALIFORNIA, MICHIGAN and MAINE specimens.

POST-DENVER FINE MINERAL COLLECTION and INVENTORY LIQUIDATION AUCTION (set 2 of 2) - end Thursday, September 28th, 2017

Ends Thursday, September 28th, 2017
at 6:45 PM (Central Time Zone)

This week's auction is filled with new material we picked up over the last few months along with rarities, unusual pieces, gem crystals, classics and display specimens. You'll even find a few fossils, carving and gemstones mixed in every now and then. Look for pieces mixed in from various collections we've obtained including Willard Wulff, Kay Robertson, Francesco Bedogné, and Paul Zerfass, along with dealers' inventories. Look here for the not so typical mineral specimens along with plenty of your favorites. We don't just offer the "standard 20 species", but an eclectic mix of specimens that appeal to everybody! Enjoy!


Some of the highlights from this week’s include:
1. A beautiful display piece of the new Purple QUARTZ ("Grape" Chalcedony / Agate) from Indonesia
2. Newly mined beautiful pink MANGANESE-BEARING CALCITE from a recent discovery in Bulgaria
3. GEMMY THAUMASITE crystal from the N'Chwaning II Mine, South Africa
4. One of the rare and colorful "RAINBOW" ANDRADITE GARNETS from Japan!
5. TENORITE from the TYPE LOCALITY in Italy (ex Kay Robertson Collection)
6. Rarities include: ANDORITE with ZINKENITE, "KORNITE", BARBOSALITE, FRANCISITE, LAURELITE, SABINAITE and GARRONITE-(Ca)

$25 and $10 RESERVE GEMSTONE CONSIGNMENT AUCTION - Ends September 21, 2017

Here we have one of our popular combined auction of mixed gems of varying reserve prices
($25 and $10 respectively this week)
Unique and attractive items as always - check them out !!
Questions about Gems?: CONTACT Gem admin Brian Kosnar: click here

GIANT DENVER SHOW MINERAL COLLECTION and INVENTORY LIQUIDATION AUCTION (set 2 of 2) - end September 21st, 2017

Ends Thursday, September 21st, 2017
at 6:30 PM (Central Time Zone)

We have a double-set of SPECIAL DENVER SHOW auctions this week, loaded with pieces that we set back, and normally would have offered our buyers at the main show, but just didn't have room. We have a great mix of classic, contemporary pieces, rarities and gem crystals! Look for pieces mixed in from various collections we've obtained including Willard Wulff, Kay Robertson, Francesco Bedogné, and Paul Zerfass, along with dealers' inventories. Look here for the not so typical mineral specimens along with plenty of your favorites. We don't just offer the "standard 20 species", but an eclectic mix of specimens that appeal to everybody! Enjoy!


Some of the highlights from this week’s include:
1. Excellent, classic, gemmy beautiful green colored EPIODTE crystals with minor "Byssolite" (ex Richard A. Kosnar Collection
2. A superb, highly lustrous and VERY gemmy, bi-colored pink and green TOURMALINE from the Himalaya Mine in California.
3. Beautiful and sought after gemmy green ANDRADITE (var: Demantoid) (with rare chrome-green crystals!) from Italy
4. RARELY seen doubly-terminated, bi-color BLUE (Aquamarine and PINK (Morganite) BERYL crystal on matrix from Pakistan.
5. A GEM QUALITY colorless CALCITE crystal from China.
6. Desirable, rare and eye-catching electric midnight blue LINARITE crystals on matrix from the Grand Reef Mine in Arizona.
7. Hard to find doubly-terminated, steel-grey colored BOURNONITE crystal group from Bolivia.
8. Incredibly impressive important and HISTORIC piece of GEM QUALITY synthetic QUARTZ specimen from the old Bell Labs in New Jersey

GIANT DENVER SHOW MINERAL COLLECTION and INVENTORY LIQUIDATION AUCTION (set 1 of 2) - end September 21st, 2017

Ends Thursday, September 21st, 2017
at 6:30 PM (Central Time Zone)

We have a double-set of SPECIAL DENVER SHOW auctions this week, loaded with pieces that we set back, and normally would have offered our buyers at the main show, but just didn't have room. We have a great mix of classic, contemporary pieces, rarities and gem crystals! Look for pieces mixed in from various collections we've obtained including Willard Wulff, Kay Robertson, Francesco Bedogné, and Paul Zerfass, along with dealers' inventories. Look here for the not so typical mineral specimens along with plenty of your favorites. We don't just offer the "standard 20 species", but an eclectic mix of specimens that appeal to everybody! Enjoy!


Some of the highlights from this week’s include:
1. Classic, rare matrix LEGRANDITE from the Ojuela Mine, Mexico
2. Showy and very good sized crystals of GORMANITE on matrix from Rapid Creek, Canada (ex Francesco Bedogné Collection)
3. A colorful and hard to find piece of multicolor OPAL replacing Petrifed Wood from Virgin Valley, Nevada (ex Kay Robertson Collection)
4. Wonderful cabinet display specimen of gemmy beautifully crystallized FLUORITE from the Jaimina Mine, Spain (ex Herb Obodda)
5. Classic and hard to find specimen of purplish APATITE on matrix from the Foote Mine in North Carolina
6. A wonderful display specimen of large robust VANADINITE crystals from the uncommon locality of Touissit, Morocco (ex Franceso Bedogné Collection)

SPECIAL $100 and $50 RESERVE GEMSTONE AUCTION - Ends September 14th, 2017

Ends Thursday, September 14th, 2017 at 7:00 PM (Central Time Zone)

ATTENTION! We are pleased to announce that we have purchased a notable collection / supply from a retiring gem dealer of beautiful mixed stones, cabochons and jewelry which we will be offering at liquidation prices!!

Keep watching every week for a great mix and new variety of good quality gemstones to appear over the following months. Reserve prices will typically be $100 and $50 on the better material every other week, with $25 and $10 reserves on alternating weeks.
Questions about Gems?: CONTACT Gem admin Brian Kosnar: click here

PRE-DENVER MINERAL COLLECTION and INVENTORY LIQUIDATION AUCTION (set 2 of 2) - end September 14th, 2017

Ends Thursday, September 14th, 2017
at 6:45 PM (Central Time Zone)

This week's auction is filled with new material we picked up over the last few months along with rarities, unusual pieces, gem crystals, classics and display specimens. You'll even find a few fossils, carving and gemstones mixed in every now and then. Look for pieces mixed in from various collections we've obtained including Willard Wulff, Kay Robertson, Francesco Bedogné, and Paul Zerfass, along with dealers' inventories. Look here for the not so typical mineral specimens along with plenty of your favorites. We don't just offer the "standard 20 species", but an eclectic mix of specimens that appeal to everybody! Enjoy!


Some of the highlights from this week’s include:
1. A gemmy, very sharp, well-formed, purple 206 gram KUNZITE crystal group from Afghanistan
2. Excellent, GEMMY, purple and blue cubic phantom FLUORITE specimen from Illinois (ex Paul Zerfass Collection)
3. Rare purplish colored gemmy DIASPORE crystal from Myanmar (Burma)
4. An historic and beautiful specimen of CHRYSOCOLLA from Globe, Arizona that was sold by Arthur Montgomery!!
5. A BIG modified crystal of HIGHLY LUSTROUS PYRITE (weighing over 1,700 grams) from Merelani, Tanzania
6. Rarities include: "CASWELLITE", FERGUSONITE, FERRIERITE-(Mg), LORENZENITE, and a FINE quality specimen of the rare lead antimony sulfosalt SEMSEYITE!

SPECIAL PRE-DENVER SHOW FINE MINERAL COLLECTION LIQUIDATION AUCTIONS - end Thursday, Sept. 14, 2017 (set 1 of 2)

Ends Thursday, Sept. 14, 2017
at 6:30 PM (Central Time Zone)

FEATURING MANY SPECIMENS FROM OLD MINERAL COLLECTIONS! Most of the specimens here are from old stashes and purchased dealer inventories, s you cannot easily find in today's market.

We are honored to announce the purchase of several large collections including the fantastic Kay Robertson collection of 10,000 specimens, filled with European treasures and old classics accumulated since she started collecting in 1928 (see our website for more information: http://www.irocks.com/kay-robertson-a-treasure-in-the-mineral-collecting-world)!


Some of the highlights from this week’s include:
1. TOURMALINES
2. Rarities & classic from the Kay Robertson and Paul Zerfass Collections
3. Large & rare MOLYBDENITE in QUARTZ
4. Fine large French SMOKY QUARTZ
5. Superb old Bisbee MALACHITE pseudomorph
6. Rare Tsumeb AZURITE & QUARTZ TN
7. Large FLUORITE from a NEW Chinese find
8. Superb old $2000 Cornwall CHALCOCITE and Cavradi HEMATITE
9. Large rare FAIRFIELDITE xl

GIANT PRE-DENVER SHOW FINE MINERAL COLLECTION LIQUIDATION AUCTIONS - end Thursday, Sept. 7, 2017 (set 1 of 2)

Ends Thursday, Sept. 7, 2017
at 6:30 PM (Central Time Zone)

THREE PAGES FEATURING MANY SPECIMENS FROM OLD MINERAL COLLECTIONS! Most of the specimens here are from old stashes and purchased dealer inventories that you cannot as easily find in today's market as in the past.

We are honored to announce the purchase of several large collections including the fantastic Kay Robertson collection of 10,000 specimens, filled with European treasures and old classics accumulated since she started collecting in 1928 (see our website for more information: http://www.irocks.com/kay-robertson-a-treasure-in-the-mineral-collecting-world)!


Some of the highlights from this week’s include:
1. Fine rare old Butte BORNITE pseudomorph
2. Excellent BENITOITE and NEPTUNITE plates
3. Classics and rarities from the Kay Robertson and Bruce Murphy Collections
4. Large Pennsylvania CALCITE
5. Old gem FLUORITE xls from the Heights Mine
6. RARE large pseudo of QUARTZ after CALCITE
7. Superb old Mina Ojuela ADAMITE ball