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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

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

Specimens Available: 50

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

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

Specimens Available: 60

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!

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

Specimens Available: 21

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

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

Specimens Available: 30

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!


Closed Auctions

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

PRE-DENVER SHOW FINE MINERAL COLLECTION and INVENTORY LIQUIDATION AUCTION (set 2 of 2) - end September 7th, 2017

Ends Thursday, September 7th, 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, DOUBLY-TERMINATED, bicolored 260 gram KUNZITE crystal from Afghanistan
2. Showy and eye-catching specimen of QUARTZ coating MALACHITE pseudomorphs after AZURITE from the Piedmont Mine in Arizona
3. Gorgeous multi-colored group of spherical SMITHSONITE on matrix from Choix, Mexico
4. Beautiful gemmy, rich orange-pink colored DOUBLY-TERMINATED BUSTAMITE crystal on matrix from Australia (ex Francesco Bedogné Collection)
5. A classic specimen of CHALCOCITE pseudomorphing after COVELLITE from Butte, Montana
6. Showy metallic MOLYBDENITE specimen from Kingsgate, New South Wales, Australia

$25 and $10 RESERVE GEMSTONE CONSIGNMENT AUCTION - Ends September 7, 2017

Ends September 7th, 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

SPECIAL $100 and $50 RESERVE GEMSTONE AUCTION - Ends August 31st, 2017

Ends Thursday, August 31st, 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 SHOW MINERAL COLLECTION and INVENTORY LIQUIDATION AUCTION - end Aug 31st, 2017

Ends Thursday, August 31st, 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. GEMMY bi-color pink and soft blue TOURMALINE from Afghanistan
2. INTENSE blue colored, gemmy cubic FLUORITE from Illinois (ex Kay Robertson Collection)
3. A beautiful CASSITERITE with AQUAMARINE on MUSCOVITE from BRAZIL that looks like it could be Chinese!
4. VERY HARD TO FIND NATIVE SILVER on matrix from Langban, Sweden!!
5. Classic "Rainbow" ANDRADITE GARNET from the Kohse Mine in Japan
6. Rarities include: ROXBYITE, HYDROXYLELLESTADITE, LEMMLEINITE-(Ba), COWLESITE, NENADKEVICHITE and KOSNARITE

$25 and $10 RESERVE GEMSTONE CONSIGNMENT AUCTION - Ends August 24th, 2017

Ends August 24th, 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 Aug 24th, 2017

Ends Thursday, August 24th, 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. Beautiful, classic orange PYROMOPRHITE crystals on matrix from the Bunker Hill Mine in Idaho
2. Rarely seen twinned CASSITERITE with TOURMALINE from the Viloco Mine in Bolivia
3. A very gemmy, fine quality, "Alpine"-type APATITE from Pakistan " plus another APATITE with green "Byssolite" inclusions from another find in Pakistan
4. A HARD TO FIND HEMATITE specimen from the Kay Robertson Collection from Naica, Mexico!
5. Lovely bi-color blue and colorless "phantom" FLUORITE from a new find in Pakistan
6. A 315 gram light blue color TOPAZ crystal from Brazil from the Paul Zerfass Collection

FINE MINERAL COLLECTION LIQUIDATION AUCTIONS - end Thursday, Aug 24, 2017 (set 1 of 2)

Ends Thursday, August 24, 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 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. Rich CUPRITE from Milpillas
2. Classics and rarities from the Kay Robertson Collection
3. Large Tsumeb WULFENITE xls with COPPER & DOLOMITE
4. Rare ORE specimens from the Renaud Vochten Collection
5. Large GEM spinel-twinned FLUORITE from Pakistan
6. Bisbee CALCITE with MALACHITE
7. Rare large MOHAWKITE
8. Sharp CARROLLITE xl
9. Fine NEPTUNITE
10. Rare old Ivigtut, Greenland COLUMBITE

SPECIAL $100 and $50 RESERVE GEMSTONE AUCTION - Ends August 17th, 2017

Ends Thursday, August 17th, 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 LIQUIDATION AUCTIONS - end Thursday, Aug 17, 2017 (set 1 of 2)

Ends Thursday, August 17, 2017
at 6:30 PM (Central Time Zone)

This week's auction is filled with new material from old collections, including a number of FINE OLD CLASSICS VALUED OVER $2000 - starting at $10!

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 POWELLITE and APOPHYLLITE valued over $2000
2. Rare style, large valuable CHINESE BLUE PLUMBOGUMMITE pseudomorph
3. Classics and rarities from the Kay Robertson Collection
4. Rare fine AUGITE xl from Franklin
5. Superb old COBALTITE from Sweden
6. RARE Arizona AURICHALCITE and WULFENITE from old localities
7. Exceptional color-zoned OKORUSU PHANTOM FLUORITE from 1980s finds!
8. Superb rare old Michigan COPPER valued over $2000- rare locality!
9. Large Elmwood CALCITE CLUSTER from the 1980s
10. Specimens from the Paul Zerfass Collection of French and worldwide classics.

FINE MINERAL COLLECTION and INVENTORY LIQUIDATION AUCTION (set 2 of 2) - end Aug 17th, 2017

Ends Thursday, August 17th, 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 and significant SYNTHETIC QUARTZ specimen (ex Motorola Laboratories)
2. A beautiful and showy ANGLESITE on matrix from Broken Hill, Australia
3. Fine quality, deep emerald green crystallized BROCHANTITE from the Shattuck Mine in Bisbee, Arizona
4. A classic VANADINITE specimen from the Old Yuma Mine in Arizona that was PICTURED in the MINERALOGICAL RECORD!
5. An attractive and rare gemmy "Star of David" twinned SPINEL crystal from Myanmar (Burma)
6. Rarities include, SUSSEXITE, PARAVAUXITE, ZANAZZIITE, CANAVESITE, and GOLDMANITE

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

Ends August 10th, 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 Aug 10th, 2017

Ends Thursday, August 10th, 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. Beautiful and unique PURPLE QUARTZ / CHALCEDONY from a recent find in Indonesia
2. Sharp and GEM QUALITY classic yellow color SANIDINE FELDSPAR crystal from Madagascar
3. Fine bright red color REALGAR crystals on matrix from the Royal Reward Mine in Washington from the Francesco Bedogné Collection
4. A rarely seen SMOKY QUARTZ GWINDEL from the Hunza Valley in Pakistan
5. Gorgeous and rarely seen gemmy TRAPICHE HABIT RUBY crystal from Myanmar (Burma)
6. Classic and RARE pseudomorph of BAYLDONITE after MIMETITE from Tsumeb from the Kay Robertson Collection
7. A lovely, multicolor, gemmy, phantom FLUORITE specimen from a new find in Baluchistan, Pakistan

FINE MINERAL COLLECTION and INVENTORY LIQUIDATION AUCTION - end Aug 10th, 2017

Ends Thursday, August 10th, 2017
at 6:30 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. Rare & superb large BETEKHTINITE
2. Fine gem bi-colored TOURMALINE (1980s)
3. Specimens from the Paul Zerfass Collection
4. Excellent Tsumeb LEADHILLITE
5. Classic and rarities from the Kay Robertson Collection
6. Rare large matrix Herkimer QUARTZ "diamond

SPECIAL MINERAL AUCTION - THE COLLECTION OF SENATOR, Dr. MIGUEL ROMERO - Ends * TUESDAY * August 8, 2017

Ends ** TUESDAY ** August 8th, 2017
at 6:30 PM (Central Time Zone)

We are wrapping up the summer's special themed auctions with a bang! For the last three months we've been putting together singular auctions on Tuesday nights that focused either on a particular collector, locality or group of minerals. We are happy to announce that the final auction of the special sets will be from the world-famous mineral collection of Senator and PhD Chemist, Miguel Romero Sanchez. With the great success of the first Romero auction, we decided to put together another auction a few months ago and save it for the final week. Enjoy!

Dr. Romero assembled the finest collection of Mexican minerals, and minerals in general, ever put together in Mexico.

After his death, and ten years on loan and display to the University of Arizona for exhibition, the core collection was sold to The Arkenstone by the Romero family in 2007. Many other specimens, including a systematic suite, and lesser pieces, were donated to the Autonomous University of Mexico.

In closing out his private museum and offices in his home of Tehuacan, Mexico, it was found only recently that a shipping container of mixed specimens, both worldwide and Mexican in origin had been put together for possible donation or sale but never sent to its destination. We are pleased now to present much of that surprise trove to you, including rare historic and Mexican specimens, in our auctions as a special offering

PLEASE NOTE: This auction closes on a TUESDAY night, not our normal Thursday schedule, and we'll send out a reminder / announcement before it closes to you don't miss out.

SPECIAL $100 and $50 RESERVE GEMSTONE AUCTION - Ends August 3rd, 2017

Ends Thursday, August 3rd, 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 Aug 3rd, 2017

Ends Thursday, August 3rd, 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 rare yellow colored BRUCITE specimen from a new discovery in Pakistan
2. Beautiful, sharp, lustrous, fine quality, brilliant orange colored ORPIMENT on matrix from Nevada
3. Rich pink, gemmy, "barrel"-shaped, FLUORAPATITE crystals on MUSCOVITe from Pakistan from the collection of Francesco Bedogné
4. A fine quality, highly lustrous, metallic crystal of silvery CARROLLITE on CALCITE from DR Congo
6. Beautifully crystallized, GEM quality, razor sharp, well-formed SMOKY QUARTZ from Brazil from the Paul Zerfass Collection
7. Rarities include LEITITE with LUDLOCKITE, BARRERITE, CARLETONITE, GUDMUNDITE, Co-bearing PICKERINGITE, VILLAMANINITE, HAWIWEEITE and KARELIANITE