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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.

 

 

Closed Auctions

SPECIAL $100 and $50 RESERVE GEMSTONE AUCTION - Ends November 15th, 2018

Ends Thursday, November 15th, 2018 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 SPECIMENS FROM THE KAY ROBERTSON COLLECTION - end Thursday November 15th, 2018

Ends Thursday, November 15th, 2018
at 6:45 PM (Central Time Zone)


We have a great selection of material that we picked up over the last few months along with rarities, unusual pieces, gem crystals, classics and display specimens. Look for new goodies from recent shows / discoveries along with new collection acquisitions to appear in the coming weeks. You'll even find a few fossils, carvings / lapidary items and gemstones mixed in every now and then. We'll still have selections from various collections we've obtained including Willard Wulff, Brian Lloyd, Rolando Gioia, Charlie Key and plenty of pieces from Kay Robertson along with various 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 auction include:

1. Classic RHODOCHROSITE association specimen from the Sweet Home Mine in Colorado
2. Look for Tsumeb Classics such as AZURITE and MIMETITE!
3. GEM quality pink FLUORITE from Pakistan & GEM quality green FLUORITE from New Hampshire
4. Excellent LARGE doubly-terminated crystals of the rare silver sulfosalt ANDORITE from Bolivia
5. Wonderful "floater" specimen of GYPSUM (twinned) from the Red River Floodway in Canada
6. Beautiful radial sprays of golden-yellow VALENTINITE from China
7. Gemmy, natural purple and yellow bi-color AMETRINE slice from Bolivia
8. Page 2 features assorted worldwide minerals (focusing on European localities) from the Kay Robertson Collection

POST-MUNICH SHOW MINERAL COLLECTION AUCTIONS (set 1 of 2) featuring OLD CLASSICS, GEM CRYSTALS and RARE SPECIES - ends Thursday Nov 15, 2018

ends Thursday Nov 15, 2018
at 6:30 PM (Central Time Zone)

A selection of specimens in this week's auctions with a mix of classics, gem crystals, contemporary minerals and rare species ! We are continuing to process material from the wonderful old mineral collections and purchases including 1980s-90s specimens from the collections of Paul Zerfass, Ted Bartels and Art Soregaroli Collections, and 60 years of collecting history from the Kay Robertson and Charlie Key Collections. Lots of rare mineral specimens here that are hard to find at ANY price, let alone at auction!


Some of the highlights from this week’s include:

1. NEW FIND of RHODOCHROSITE from the N'Chwaning I
and a rare rhodo from a limited 2015 find at the N'Chwaning III Mine
2. Old rare GLAUCODOT and COBALTITE specimens
3. Rare APATITE from a NEW FIND in remote India
4. Excellent and rare DAL'NEGORSK specimens
5. RHODOCHROSITE from the W.S. Logan Collection
6. Large COPPERS from Tsumeb and New Mexico
7. Large Erongo TOURMALINE with FOITITE and SCHORL

SPECIAL POST-MUNICH MINERAL AUCTION - MINIATURES AND THUMBNAILS FROM THE COLLECTION of IRV BROWN - ends TUESDAY November 13, 2018

Ends TUESDAY November 13th, 2018
at 6:30 PM (Central Time Zone)

Continuing with our special themed auctions we are thrilled for our next installment featuring miniature and thumbnail specimens from the worldwide collection of Irv Brown.

Irv has assembled one of the great collections in the United States, which typically has featured cabinet sized display specimens, but over the years he assembled an attractive suite of thumbnails and miniatures. We recently acquired several flats of these specimens and are thrilled to offer them in installments in the auctions over the next few months.

Lastly, 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.

$25 and $10 RESERVE GEMSTONE AUCTION - Ends November 8th, 2018

Ends November 8th, 2018 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-MUNICH FINE MINERAL COLLECTION and INVENTORY LIQUIDATION AUCTION (set 2 of 2) - end Thursday November 8th, 2018

Ends Thursday, November 8th, 2018
at 6:45 PM (Central Time Zone)


We have a great selection of material that we picked up over the last few months along with rarities, unusual pieces, gem crystals, classics and display specimens. Look for new goodies from recent shows along with new collection acquisitions to appear in the coming weeks. You'll even find a few fossils, carvings / lapidary items and gemstones mixed in every now and then. We'll still have selections from various collections we've obtained including Willard Wulff, Brian Lloyd, Rolando Gioia, Charlie Key, etc. 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 auction include:

1. Beautiful botryoidal green FLUORITE on purple AMETHYST from Colorado
2. Attractive brilliant orange SPESSARTINE GARNET on DOUBLY-TERMINATED SMOKY QUARTZ from China
3. A couple of different multi-colored TOURMALINES from Brazil (ex Rolando Gioia Collection)
4. Lovely CALCITE with purple FLUORITE from Illinois (ex Ross Lillie Collection)
5. INTENSE green colored CHROME TOURMALINE specimen from Tanzania
6. An odd botryoidal ARAGONITE specimen from Yogo Gulch, Montana
7. Beautiful, GEM quality, scepter habit AMETHYST crystals on CALCITE from Bolivia
8. Rarities include GADOLINITE-(Y), GUDMUNDITE, CARPATHITE, RUIZITE and LEMMLEINITE-Ba

POST-MUNICH SHOW MINERAL COLLECTION AUCTIONS (set 1 of 2) featuring OLD CLASSICS, GEM CRYSTALS and RARE SPECIES - ends Thursday Nov 8, 2018

POST-MUNICH SHOW MINERAL COLLECTION AUCTIONS (set 1 of 2) featuring OLD CLASSICS, GEM CRYSTALS and RARE SPECIES - ends Thursday Nov 8, 2018 ends Thursday Nov 8, 2018
at 6:30 PM (Central Time Zone)

A selection of specimens in this week's auctions with a mix of classics, gem crystals, contemporary minerals and rare species ! We are continuing to process material from the wonderful old mineral collections of Kay Robertson along with fine minerals from numerous other collections and purchases including 1980s-90s specimens from the collections of Paul Zerfass, Ted Bartels and Art Soregaroli Collections. Lots of rare mineral specimens here that are hard to find at ANY price, let alone at auction!


Some of the highlights from this week’s include:

1. Rare large EMERALD & SCHEELITE from China
2. NEW FIND of AQUAMARINE from the Erongos
3. Superb Swiss HEMATITE IRON ROSE thumbnail
4. Large SULFUR & BARITE from Poland
5. Excellent old Baia Sprie BARITE

SPECIAL $100 and $50 RESERVE GEMSTONE AUCTION - Ends November 1st, 2018

Ends Thursday, November 1st, 2018 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 MINERAL AUCTION - $249 RESERVE LIQUIDATION SPECIMENS - ends Thursday, November 1, 2018

Ends November 1, 2018
at 6:45 PM (Central Time Zone)

Continuing with our special themed auctions we've put together a selection of specimens all starting with $249 reserve bids. Every piece in this auction is valued at least over $500 in the inventory (some are valued at $1,000+). There are plenty of classic and contemporary, fine quality, attractive miniature and cabinet display pieces from around the world.

PLEASE NOTE: Due to the larger size and weight of some of the pieces in this auction (their bases included), there will be additional shipping charges. Please keep this in mind when bidding. If you have any questions, please ask before placing your bids. Thank you!

POST-MUNICH SHOW MINERAL COLLECTION AUCTIONS (set 1 of 2) featuring OLD CLASSICS, GEM CRYSTALS and RARE SPECIES - ends Thursday Nov 1, 2018

ends Thursday Nov 1, 2018
at 6:30 PM (Central Time Zone)

A selection of specimens in this week's auctions with a mix of classics, gem crystals, contemporary minerals and rare species ! We are continuing to process material from the wonderful old mineral collections of Kay Robertson along with fine minerals from numerous other collections and purchases including 1980s-90s specimens from the collections of Paul Zerfass, Ted Bartels and Art Soregaroli Collections. Lots of rare mineral specimens here that are hard to find at ANY price, let alone at auction!


Some of the highlights from this week’s include:

1. Dramatic large AMETHYST pseudo from the Ken Roberts Collection
2. Fine MALACHITE "Christmas tree" from the famous 1980s finds at Morenci
3. Superb Spanish DOLOMITE & Austrian TITANITE
4. Rare large LOLLINGITE xls from Franklin
5. RHODOCHROSITES from the W.S. Logan Collection
6. Excellent PYROMORPHITE from Daoping
7. Uncommon and superb style PYRITE from Huanzala
8. Large Tsumeb CALCITE w/ DUFTITE
9. Rare large HUBEITE, INESITE, APOPHYLLITE, QUARTZ & CALCITE
10. Exceptional matrix ORPIMENT from the Twin Creeks Mine

$25 and $10 RESERVE GEMSTONE AUCTION - Ends October 25th, 2018

Ends October 25th, 2018 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

PRE-MUNICH SHOW MINERAL COLLECTION AUCTIONS (set 1 of 2) featuring OLD CLASSICS, GEM CRYSTALS and RARE SPECIES - ends Thursday Oct 25, 2018

ends Thursday Oct 25, 2018
at 6:30 PM (Central Time Zone)

A selection of specimens in this week's auctions with a mix of classics, gem crystals, contemporary minerals and rare species ! We are continuing to process material from the wonderful old mineral collections of Kay Robertson along with fine minerals from numerous other collections and purchases including 1980s-90s specimens from the collections of Paul Zerfass, Ted Bartels and Barratt Phillips Collections. Lots of rare mineral specimens here that are hard to find at ANY price, let alone at auction!


Some of the highlights from this week’s include:

1. Superb, rare matrix RUTILE twin from Graves Mountain
2. Fine COPPERS from Bisbee and the Ray Mine
3. Large ORANGE CREEDITE
4. Rare old BLACK FOREST combination
5. Selection of ARIZONA specimens
6. Excellent Chinese SCHEELITE miniature
7. Rich rare BRASSITE from the Type Locality
8. Superb large APOPHYLLITE & STILBITE from India
9. QUARTZ w/ HEMATITE iron roses from Switzerland from the collection of the Natural History Museum of Bern and the Ted Bartels Collection
10. RARE style FLUORITE from St. Gotthard, Switzerland
11. Rare RED BERYL thumbnail xl cluster
12. Large PLUMBOGUMMITE
13. RHODOCHROSITES from the W.S. Logan Collection
14. Rare very fine MCGOVERNITE and a large WILLEMITE xl from the Sterling Mine

PRE-MUNICH FINE MINERAL COLLECTION and INVENTORY LIQUIDATION AUCTION (set 2 of 2) - FEATURING SPECIMENS FROM THE KAY ROBERTSON COLLECTION - end Thursday October 25th, 2018

Ends Thursday, October 25th, 2018
at 6:45 PM (Central Time Zone)


We have a great selection of material that we picked up over the last few months along with rarities, unusual pieces, gem crystals, classics and display specimens. Look for new goodies from Tucson along with new collection acquisitions to appear in the coming weeks. You'll even find a few fossils, carvings / lapidary items and gemstones mixed in every now and then. We'll still have selections from various collections we've obtained including Willard Wulff, Brian Lloyd, Rolando Gioia, Charlie Key and plenty of pieces from Kay Robertson along with various 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 auction include:

1. Beautiful hard to find RHODOCHROSITE "rosettes" from the Santa Rita Mine, Peru
2. A newly mined piece of colorless / white GROSSULAR GARNET from California that fluoresces!
3. Two fantastic showy display specimens of FLUORITE China from the collection of Dr. Stephen Smale
4. Lovely "Spinel"-twinned SILVER crystals from Australia
5. Attractive color-change MONAZITE-(Ce) twinned crystals from Bolivia
6. A wonderful, GEMMY, partially etched pink MORGANITE crystal from Brazil
7. Beautiful crystallized GOLD crystals from an older find in Brazil
8. Page 2 features assorted worldwide minerals (focusing on European localities) from the Kay Robertson Collection

SPECIAL $100 and $50 RESERVE GEMSTONE AUCTION - Ends October 18th, 2018

Ends Thursday, October 18th, 2018 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 - FEATURING SPECIMENS FROM THE KAY ROBERTSON COLLECTION - end Thursday October 18th, 2018

Ends Thursday, October 18th, 2018
at 6:45 PM (Central Time Zone)


We have a great selection of material that we picked up over the last few months along with rarities, unusual pieces, gem crystals, classics and display specimens. Look for new goodies from Tucson along with new collection acquisitions to appear in the coming weeks. You'll even find a few fossils, carvings / lapidary items and gemstones mixed in every now and then. We'll still have selections from various collections we've obtained including Willard Wulff, Paul Zerfass, Rolando Gioia, Charlie Key and plenty of pieces from Kay Robertson along with various 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 auction include:

1. Large GEMMY multi-colored "phantom" FLUORITE group from the Minerva #1 Mine, Illinois
2. A newly mined piece of the now famous "GRAPE AGATE" / "GRAPE CHALCEDONY" from Indonesia
3. Lovely stark blue KYANITE crystals among mint green FUCHSITE from Russia
4. Attractive silvery metallic BOURNONITE "cogwheels" on matrix from Bolivia
5. Tsumeb staples like AZURITE, SMITHSONITE and CALCITE
6. Classic specimen of AZURITE with MALACHITE plus reticulated CERUSSITE from Tiger, Arizona
7. Beautiful skeletal GOLD crystals on QUARTZ from Grass Valley, California
8. Page 2 features assorted worldwide minerals (focusing on European localities) from the Kay Robertson Collection

$25 and $10 RESERVE GEMSTONE AUCTION - Ends October 11th, 2018

Ends October 11th, 2018 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 FINE MINERAL COLLECTION and INVENTORY LIQUIDATION AUCTION (set 2 of 2) - FEATURING SPECIMENS FROM THE KAY ROBERTSON COLLECTION - end Thursday October 11th, 2018

Ends Thursday, October 11th, 2018
at 6:45 PM (Central Time Zone)


We have a great selection of material that we picked up over the last few months along with rarities, unusual pieces, gem crystals, classics and display specimens. Look for new goodies from Tucson along with new collection acquisitions to appear in the coming weeks. You'll even find a few fossils, carvings / lapidary items and gemstones mixed in every now and then. We'll still have selections from various collections we've obtained including Willard Wulff, Paul Zerfass, Rolando Gioia, Charlie Key and plenty of pieces from Kay Robertson along with various 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 auction include:

1. Large GEMMY purple / lilac colored "phantom" FLUORITE group from Spain
2. Desirable "white cap" AMAZONITE crystals from Colorado (ex Dave Bergman Collection)
3. BIG impressive porcelain-esque CARLSBAD TWINNED MICROCLINE with SCHORL from Pakistan
4. Attractive doubly-terminated "floater" GEMMY SMOKY QUARTZ specimen from the California Blue Mine, San Bernardino County, California.
5. Classic reticulated twinned CERUSSITE on matrix from Tsumeb
6. An interesting pink CHALCHEDONY specimen from the childhood home of Supreme Court Justice Sandra Day O'Connor.
7. Rarities include FERRONIGERITE-2N1S, TUGTUPITE, MENDIPSITE and VAUXITE with PARAVAUXITE
8. Page 2 features assorted worldwide minerals (focusing on European localities) from the Kay Robertson Collection

POST-DENVER MINERAL COLLECTION AUCTIONS (set 1 of 2) featuring OLD CLASSICS, GEM CRYSTALS and RARE SPECIES - ends Thursday Oct 11, 2018

ends Thursday Oct 11, 2018
at 6:30 PM (Central Time Zone)

A selection of specimens in this week's auctions with a mix of classics, gem crystals, contemporary minerals and rare species ! We are continuing to process material from the wonderful old mineral collections of Kay Robertson along with fine minerals from numerous other collections and purchases including 1980s-90s specimens from the collections of Paul Zerfass, Ted Bartels and Barratt Phillips Collections. Lots of rare mineral specimens here that are hard to find at ANY price, let alone at auction!


Some of the highlights from this week’s include:

1. Superb RHODOCHROSITE from the late 1970s finds at the N'Chwaning I Mine
2. Rare old classics from Neudorf
3. Gem AQUAMARINE from a NEW FIND in the Erongos
4. Huge rare old New York SCAPOLITE and classic Eden Mills GROSSULAR & DIOPSIDE
5. Large colorful SMITHSONITE from Mexico
6. Rare large VIVIANITE from Kerch
7. Selection of RHODOCHROSITES
8. Superb rare Arkansas SMOKTY QUARTZ

SPECIAL $100 and $50 RESERVE GEMSTONE AUCTION - Ends October 4th, 2018

Ends Thursday, October 4th, 2018 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 SPECIMENS FROM THE KAY ROBERTSON COLLECTION - end Thursday October 4th, 2018

Ends Thursday, October 4th, 2018
at 6:45 PM (Central Time Zone)


We have a great selection of material that we picked up over the last few months along with rarities, unusual pieces, gem crystals, classics and display specimens. Look for new goodies from Tucson along with new collection acquisitions to appear in the coming weeks. You'll even find a few fossils, carvings / lapidary items and gemstones mixed in every now and then. We'll still have selections from various collections we've obtained including Willard Wulff, Paul Zerfass, Rolando Gioia, Charlie Key and plenty of pieces from Kay Robertson along with various 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 auction include:

1. Superb, classic, GEMMY, blue-green, UN-REPAIRED TOURMALINE crystal from the Pederneira Mine, Brazil
2. Attractive, gemmy, soft blue color AQUAMARINE aesthetically perched on ALBITE from Pakistan
3. Wonderful COLOR CHANGE FLUORITE specimen from the La Barre Mine in France (ex Paul Zerfass Collection)
4. Unusual "etched" / skeletal PYRITE specimen from King County, Washington
5. A gorgeous group of doubly-terminated AMETHYST crystals on matrix from Jackson's Crossroad, Georgai
6. Fantastic colorless "ice" FLUORITE crystals with CALCITE from the Huanggang Fe-Sn deposit, China
7. Rarities include LUDLOCKITE (Type Locality), GORDAITE (Type Locality), NOVAKITE (Type Locality) and CALEDONITE
8. Page 2 features assorted worldwide minerals (focusing on European localities) from the Kay Robertson Collection

POST-DENVER MINERAL COLLECTION AUCTIONS (set 1 of 2) featuring OLD CLASSICS, GEM CRYSTALS and RARE SPECIES - ends Thursday Oct 4, 2018

ends Thursday Oct 4, 2018
at 6:30 PM (Central Time Zone)

A selection of specimens in this week's auctions with a mix of gem crystals, classics over 100 years old, contemporary beauties and rare species ! We are continuing to process material from the wonderful old mineral collections of Kay Robertson along with fine minerals from numerous other collections and purchases including 1980s-90s specimens from the Ted Bartels and Barratt Phillips Collections. Lots of rare mineral specimens here that are hard to find at ANY price, let alone at auction!


Some of the highlights from this week’s include:

1. Superb large AQUAMARINE from a NEW FIND in the Erongos
2. Illustrated specimens from the Dr. Barratt Phillips Collection
3. Selection of RHODOCHROSITES
4. Rare large OKLAHOMA MALACHITE
5. Excellent gemmy DT bi-colored TOURMALINE from the Himalaya Mine
6. Striking and unusual large Uruguay AMETHYST & CALCITE cast from the Ken Roberts Collection
7. Old, rare HEDENBERGITE from the Type Locality in Sweden
8. Rare SCORODITE from Brazil and unusual old GALENA and CERUSSITE from Broken Hill

$25 and $10 RESERVE GEMSTONE AUCTION - Ends September 27th, 2018

Ends September 27th, 2018 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 FINE MINERAL COLLECTION and INVENTORY LIQUIDATION AUCTION (set 2 of 2) - FEATURING SPECIMENS FROM THE KAY ROBERTSON COLLECTION - end Thursday September 27th, 2018

Ends Thursday, September 27th, 2018
at 6:45 PM (Central Time Zone)


We have a great selection of material that we picked up over the last few months along with rarities, unusual pieces, gem crystals, classics and display specimens. Look for new goodies from Tucson along with new collection acquisitions to appear in the coming weeks. You'll even find a few fossils, carvings / lapidary items and gemstones mixed in every now and then. We'll still have selections from various collections we've obtained including Willard Wulff, Francesco Bedogne, Rolando Gioia, Charlie Key and plenty of pieces from Kay Robertson along with various 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 auction include:

1. Attractive gemmy pink etched MORGANITE BERYL from Brazil (73.33 grams)
2. A classic specimen of DESCLOIZITE with unusual CALCITE "casts" from Berg Aukus, Namibia
3. Rich, deep blue, color gemmy AQUAMARINE from Vietnam
4. Beautiful newly discovered PINK OPAL with lovely fluorescence from Peru
5. Excellent, rich orange color, GEMMY GROSSULAR GARNET from the Jeffrey Mine, Canada
6. RARELY SEEN, good quality RHODOCHROSITE specimen from Freiberg, Germany!!
7. Superb GEMMY green and purple cubic FLUORITE with ARSENOPYRITE from China (ex " Dr. Stephen Smale Collection)
8. A rarely seen old time LOLLINGITE from Pribram, Czech Republic!
9. Page 2 features assorted worldwide minerals (focusing on European localities) from the Kay Robertson Collection

POST-DENVER MINERAL COLLECTION AUCTIONS (set 1 of 2) featuring OLD CLASSICS, GEM CRYSTALS and RARE SPECIES - ends Thursday Sept 27, 2018

ends Thursday Sept 27, 2018
at 6:30 PM (Central Time Zone)

A selection of specimens in this week's auctions with a mix of gem crystals, classics over 100 years old, contemporary beauties and rare species ! We are continuing to process material from the wonderful old mineral collections of Kay Robertson along with fine minerals from numerous other collections and purchases including 1980s-90s specimens from the Ted Bartels and Barratt Phillips Collections. Lots of rare mineral specimens here that are hard to find at ANY price, let alone at auction!


Some of the highlights from this week’s include:

1. Superb carved heart-shaped gem TOURMALINE, 1980s CALIFORNIA
2. Mont St-Hilaire specimens from the Charlie Key Collection
3. gem KUNZITE from a NEW FIND
4. a SIGNIFICANT USA HEULANDITE FROM NEW JERSEY, ex. Steve Smale
5. Selection of specimens from the Ted Bartels, Kay Robertson and other collections
6. Minerals and fossils from the Dr. Barratt Phillips Collection including many unique oddities!

SPECIAL DENVER SHOW MINERAL AUCTION - THE COLLECTION of FRANCESCO BEDOGNE - ends TUESDAY September 25, 2018

Ends TUESDAY September 25th, 2018
at 6:30 PM (Central Time Zone)

Continuing with our special themed auctions through the summer we are thrilled for our next installment of the worldwide collection of Francesco Bedogné of Sondrio, Italy (1942-2012).

Dr. Bedogné was a beloved, well-known mineral collector, field collector and author. He specialized in collecting and writing about minerals of the Italian Alps, contributing dozens of articles and many books including the minerals of famous Alpine deposits such as Val Chiavenna, Val Bregaglia, Val Masino, Val Codera and of course the famous Val Malenco for which he was best known (see the Mineralogical Record article in Vol. 3, No. 3 : May / June 1972; pg. 120-123). Bedogné was the founder of the Valtellinese Mineralogical Institute as well. A book featuring some of his finest specimens entitled "Segrete Geometrie" was published in 2015, and is available for purchase from us here at The Arkenstone.

Bedogné's worldwide collection features many attractive historic, classic and contemporary specimens, and we've taken this opportunity showcase some great pieces from this collection. Look for more of Francesco's specimens later on this year.

SPECIAL $100 and $50 RESERVE GEMSTONE AUCTION - Ends September 20th, 2018

Ends Thursday, September 20th, 2018 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 SPECIMENS FROM THE KAY ROBERTSON COLLECTION - end Thursday September 20th, 2018

Ends Thursday, September 20th, 2018
at 6:45 PM (Central Time Zone)


We have a great selection of material that we picked up over the last few months along with rarities, unusual pieces, gem crystals, classics and display specimens. Look for new goodies from Tucson along with new collection acquisitions to appear in the coming weeks. You'll even find a few fossils, carvings / lapidary items and gemstones mixed in every now and then. We'll still have selections from various collections we've obtained including Willard Wulff, Francesco Bedogne, Rolando Gioia, Charlie Key and plenty of pieces from Kay Robertson along with various 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 auction include:

1. Excellent large gemmy MULTIPLE DOUBLY-TERMINATED AQUAMARINE from Pakistan
2. Fantastic GEMMY TRI-COLOR TOURMALINE from Afghanistan
3. SUPERB, large, rare, impressive SYNTHETIC QUARTZ SPECIMEN (ex - Bell Telephone Laboratories) (1,167 grams)
4. Beautiful classic multicolor OPAL from Australia
5. Wonderful, HIGHLY lustrous, rich blue AZURITE crystal group from Touissit, Morocco (ex " Dr. Stephen Smale Collection)<
6. Classic large multi-color "phantom" group of FLUORITE from Illinois (ex - Paul Zerfass Collection) (1,229 grams)
7. Lovely classic gemmy green cubic FLUORITE from China (ex " Dr. Stephen Smale Collection)
8. A rarely seen old time STEPHANITE from the TYPE LOCALITY in GERMANY!
9. Page 2 features assorted worldwide minerals (focusing on European localities) from the Kay Robertson Collection

$10 RESERVE GEMSTONE AUCTION - Ends September 13th, 2018

Ends September 13th, 2018 at 7:00 PM (Central Time)

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

DENVER SHOW MINERAL COLLECTION and INVENTORY LIQUIDATION AUCTION (set 2 of 2) - FEATURING SPECIMENS FROM THE KAY ROBERTSON COLLECTION - end Thursday September 13th, 2018

Ends Thursday, September 13th, 2018
at 6:45 PM (Central Time Zone)


We have a great selection of material that we picked up over the last few months along with rarities, unusual pieces, gem crystals, classics and display specimens. Look for new goodies from Tucson along with new collection acquisitions to appear in the coming weeks. You'll even find a few fossils, carvings / lapidary items and gemstones mixed in every now and then. We'll still have selections from various collections we've obtained including Willard Wulff, Francesco Bedogne, Rolando Gioia, Charlie Key and plenty of pieces from Kay Robertson along with various 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 auction include:

1. Wonderful bi-colored SAPPHIRE crystal on matrix from Madagascar
2. Newly mined, unusual "Coconut" ANDRADITE GARNET from Peru
3. GEM quality colorless TOPAZ specimen from Yunnan Province, China – 63.33 grams
4. Beautiful pinkish-red RHODOCHROSITE with QUARTZ and sulfides from the world famous Sweet Home Mine
5. Wonderful crystallized GOLD specimen from the Alta Floresta District, Brazil
6. Lovely pink manganese-bearing CALCITE crystal group from Dal'negorsk, Russia
7. Icon Trapiche Habit EMERALD from the Muzo Mine, Colombia
8. Fantastic GEMMY "phantom" FLUORIE crystal group from China – Ex Steve Smale Collection. 9. A CLASSIC specimen of PYRARGYRITE, plus a specimen of PROUSTITE from Freiberg, Germany!
10. Page 2 features assorted worldwide minerals (focusing on European localities) from the Kay Robertson Collection

PRE-DENVER MINERAL COLLECTION AUCTIONS (set 1 of 2) featuring OLD CLASSICS, GEM CRYSTALS and RARE SPECIES - ends Thursday Sept 13, 2018

ends Thursday Sept 13, 2018
at 6:30 PM (Central Time Zone)

A HUGE selection of specimens in this week's auctions with a mix of gem crystals, classics over 100 years old, contemporary beauties and rare species ! We are continuing to process material from the wonderful old mineral collections of Kay Robertson along with fine minerals from numerous other collections and purchases including 1980s-90s specimens from the Ted Bartels and Barratt Phillips Collections. Lots of rare mineral specimens here that are hard to find at ANY price, let alone at auction!


Some of the highlights from this week’s include:

1. Rare, rich old Cornwall CHALCOCITE & BORNITE
2. Superb large Indian APOPHYLLITE & STILBITE
3. Unusual large HEMATITE after MARCASITE from Egypt
4. Rich large CERUSSITE from Bunker Hill
5. Large AMETHYST w/ CALCITE from Brazil
6. Sculptural PYRRHOTITE "ROSE" from Trepca
7. Rare Arkansas TURQUOISE
8. RHODOCHROSITES from the Logan Collection including an illustrated piece
9. Classics, rarities and unusual pieces from the Kay Robertson & Barratt Phillips collections
- Old rare Norway EPIDOTE from the Des Cloizeaux and Paris Museum collections

SPECIAL $50 RESERVE GEMSTONE AUCTION - Ends September 6th, 2018

Ends Thursday, September 6th, 2018 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. $50 Reserves this week!
Questions about Gems?: CONTACT Gem admin Brian Kosnar: click here

PRE-DENVER SHOW FINE MINERAL COLLECTION and INVENTORY LIQUIDATION AUCTION (set 2 of 2) - FEATURING SPECIMENS FROM THE KAY ROBERTSON COLLECTION - end Thursday September 6th, 2018

Ends Thursday, September 6th, 2018
at 6:45 PM (Central Time Zone)


We have a great selection of material that we picked up over the last few months along with rarities, unusual pieces, gem crystals, classics and display specimens. Look for new goodies from Tucson along with new collection acquisitions to appear in the coming weeks. You'll even find a few fossils, carvings / lapidary items and gemstones mixed in every now and then. We'll still have selections from various collections we've obtained including Willard Wulff, Francesco Bedogne, Rolando Gioia, Charlie Key and plenty of pieces from Kay Robertson along with various 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 auction include:

1. Gorgeous octahedral green FLUORITE from Riemvasmaak, South Africa
2. Wonderful emerald green DIOPTASE crystals from Kimbedi, Republic of Congo
3. Beautiful, richly colored, multi-color TOURMALINE crystal with Albite from Afghanistan
4. Rare MONOHYDROCALCITE specimen from the Sunnyside Mine, Colorado
5. WATER CLEAR, COLORLESS "ICE" FLUORITES on matrix from the Huanggang Fe-Sn deposit, China
6. A very gemmy 100+ gram AQUAMARINE crystal group from Brazil! (ex Rolando Gioia Collection)
7. A GEM quality, doubly-terminated QUARTZ crystal from Arkansas with very pronounced "r" faces (ex Francesco Bedogné Collection)
8. An incredibly aesthetic display specimen of ILMENITE on matrix from the TYPE LOCALITY in Russia!
9. Page 2 features assorted worldwide minerals (focusing on European localities) from the Kay Robertson Collection