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Click here for more info.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
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 DENVER SHOW MINERAL AUCTION - THE COLLECTION of FRANCESCO BEDOGNE - ends TUESDAY September 25, 2018
Specimens Available: 24
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.
Closed Auctions
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 â€" 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 â€" 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
PRE-DENVER MINERAL COLLECTION AUCTIONS (set 1 of 2) featuring OLD CLASSICS, GEM CRYSTALS and RARE SPECIES - ends Thursday Sept 6th, 2018
ends Thursday Sept 6th, 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. Rich and rare large matrix CARROLLITE from a New Find
2. Excellent MALACHITE after AZURITE from Milpillas
3. Selection of LARGE CABINET SPECIMENS
4. Large AMETHYST from Amatitlan
5. Rare VANADINITE from Namibia and fine old Los Lamentos WULFENITE
6. Striking Indian QUARTZ REPLACING CALCITE twins
7. Minerals and fossils from the Dr. Barratt Phillips Collection including many unique oddities!
$10 RESERVE GEMSTONE AUCTION - Ends August 30th, 2018
Ends August 30th, 2018 at 7:00 PM (Central Time)
Here we have one of our popular combined auction of mixed gems of varying reserve prices
($10 this week)
Unique and attractive items as always - check them out !!
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 August 30th, 2018
Ends Thursday, August 30th, 2018
at 6:30 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. Newly mine, beautiful, color-changing cubic FLUORITE from Pakistan
2. Fantastic classic green colored CUPRIAN ADAMITE on matrix from the Ojuela Mina, Mexico
3. Wonderful, sharp, lustrous, metallic BOURNONITE "cogwheel" with Siderite from China (ex Dr. Steve Smale Collection)
4. Superb quality, highly lustrous, silvery ANDORITE specimen from the San Jose Mine, Bolivia
5. Unusual and eye-catching SCEPER CALCITE with MARCASITE STAR in the termination from China
6. Sensational, cabinet sized, multi-colored SMITHSONITE from Choix, Mexico
7. Rarely seen PYRITE specimen from the El Cobre Mine, Mexico with "Cathedral Gothic" faces!
8. Classic and hard to find GEMMY BLUE KYANITE on matrix from the Swiss Alps!
9. Rarely seen specimen of GEMMY GREEN SPHALERITE on PREHNITE from Germany!
10. Page 2 features assorted worldwide minerals (focusing on European localities) from the Kay Robertson Collection
SPECIAL MINERAL AUCTION - $499 RESERVE LIQUIDATION SPECIMENS - ends August 30, 2018
Ends THURSDAY August 30, 2018
at 6:00 PM (Central Time Zone)
Continuing with our special themed auctions through the summer we've put together a selection of higher-end specimens all starting with $499 reserve bids. Every piece in this auction is valued at over $1,000 in the inventory (most are valued at $1,500+). 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!
SPECIAL $100 RESERVE GEMSTONE AUCTION - Ends August 23rd, 2018
Ends Thursday, August 23rd, 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 this week for all gems is $100. There is a great mix this week of classic, rare, unusual and "collector" stones with retail values several times higher than their starting bids.
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 August 23rd, 2018
Ends Thursday, August 23rd, 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. Beautiful, gemmy, multi-colored, etched and sharp cubic FLUORITE from the Minerva #1 Mine, Illinois
2. Rare locality specimen of pink TOURMALINE crystal group from Hyakule, Nepal
3. Classic three piece set of reddish-pink RHODOCHROSITE crystals from the Moose Mine in Colorado (ex Willard Wulff Collection)
4. A RARELY SEEN specimen of XENOTIME-(Y) ON HEMATITE and RUTILE MATRIX from Brazil (ex Rolando Gioia Collection)
5. An attractive specimen of CASSITERITE from Pakistan with an unusual and eye-catching crystal habit
6. Fine quality crystals of RIEBECKITE on Carlsbad-twinned MICROCLINE from Mt. Malosa, Malawi
7. A newly discovered specimen of golden CLINOZOISITE from Peru
8. Beautiful, doubly-terminated, beautiful green colored BRAZILIANITE on ALBITE from Brazil
9. 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 Aug 23, 2018
ends Thursday August 23, 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, 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 Collection and a few choice pieces from others. 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. Gem TOPAZ w/ APATITE from Pakistan, & and old GERMAN TOPAZ
2. NEW FIND of AQUAMARINE & SCHORL from the Erongos
3. Superb Michigan COPPER in CALCITE & COPPER specimens
4. FINE RUSSIAN COPPER and other Ken Roberts Collection specimens
5. Large, FLUORESCENT AND TWINNED MANGANOAN CALCITE from Madan
6. RHODOCHROSITES from the Logan Collection
7. RHODOCHROSITE CABINET DISPLAY PIECE ($$$) from late 1990s - SWEET HOME MINE
FINE MINERAL COLLECTION and INVENTORY LIQUIDATION AUCTION (set 2 of 2) - FEATURING SPECIMENS FROM THE KAY ROBERTSON COLLECTION - end Thursday August 16th, 2018
Ends Thursday, August 16th, 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. Large, fine quality, thick Baveno Twinned MICROCLINE crystal with SCHORL from Pakistan
2. Attractive multi-color OPAL in PETRIFIED WOOD from Indonesia
3. A gorgeous and rarely seen specimen of silvery twinned CERUSSITE on matrix from Kimbedi, Rep. of Congo
4. GEM QUALITY nearly colorless modified cubic crystals of FLUORITE on BARITE from the Jaimina Mine, Spain
5. An interesting polished slab of NATIVE SILVER in RHODOCHROSITE from the Uchucchacua Mine, Peru
6. Classic specimen of HEMATITE ("Kidney Ore") from Cumbria, England, UK
7. Fine quality, gemmy, rich orange colored SPESSARTINE GARNET from the Escondido pegmatite, Brazil (ex Francesco Bedogné Collection)
8. Good-sized, gemmy, beautiful green colored BRAZILIANITE crystals with ALBITE from Brazil (ex Rolando Gioia Collection)
9. 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 RARITIES - ends Thursday Aug 16, 2018
ends Thursday August 16, 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, 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 Collection and a few choice pieces from other collections including Steve Smale. Lots of old classics here that are hard to find at any price, let alone at auction!
.
Some of the highlights from this week’s include:
1. Large NEPTUNITE and Tsumeb SMITHSONITE
2. RHODOCHROSITE from the W.S. Logan Collection
3. Rare large New Mexico FLUORITE
4. Selection of Kay Robertson Old Classics!
5. Ken Roberts and Norm & Roz Pellman Collection specimens
6. NEW Erongo AQUAMARINE with SCHORL FIND
7. Rare TIGER WULFENITE with FLUORITE & WILLEMITE
SPECIAL MINERAL AUCTION - $499 RESERVE LIQUIDATION SPECIMENS - ends * TUESDAY * August 14, 2018
Ends TUESDAY August 14, 2018
at 6:00 PM (Central Time Zone)
Continuing with our special themed auctions through the summer we've put together a selection of higher-end specimens all starting with $499 reserve bids. Every piece in this auction is valued at over $1,000 in the inventory (some are valued at $2,000+). There are plenty of classic and contemporary, fine quality, attractive miniature and cabinet display pieces from around the world. A handful of the specimens come with FREE custom lucite display bases as well.
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!
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.
SPECIAL $100 and $50 RESERVE GEMSTONE AUCTION - Ends August 9th, 2018
Ends Thursday, August 9th, 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 August 9th, 2018
Ends Thursday, August 9th, 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. Terrific multicolor TOURMALINE crystals on MATRIX from Afghanistan …….
2. Fantastic green octahedral FLUORITE on QUARTZ from Riemvasmaak, South Africa
3. A gorgeous and rarely seen beautiful BLUE colored HEMIMORPHITE from Kimbedi, Rep. of Congo
4. Unusual and rare "Trapiche" habit SAPPHIRE crystal from Myanmar (Burma)
5. A beautiful cabinet display specimen of HEULANDITE from the Faroe Islands, Denmark (ex Francesco Bedogné Collection)
6. Attractive bi-colored blue and golden ANATASE crystals from the Manod Quarry, Wales, UK
7. A cool and hard to find specimen of LEONITE included with BLUE HALITE from New Mexico
8. FINE quality cabinet-sized display specimen of brilliant metallic red CUPRITE from the Milpillas Mine, Mexico
9. 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 RARITIES - ends Thursday Aug 9, 2018
ends Thursday August 9, 2018
at 6:30 PM (Central Time Zone)
A wonderful selection of specimens in this week's auctions with a mix of gem crystals, classics, 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 Collection. Lots of old classics here that are hard to find at any price, let alone at auction!
.
Some of the highlights from this week’s include:
1. Superb cyclic-twinned CERUSSITE from Tsumeb
2. Large Erongo SCHORL w/ SMOKY QUARTZ from the Charlie Key Collection
3. Old large SULFUR & ARAGONITE
4. RHODOCHROSITES from the W.S. Logan Collection
5. Striking large New Mexico FLUORITE
6. NEW Erongo AQUAMARINE w/ FLUORITE FIND
7. Ken Roberts Collection specimens
8. Fine Swiss SMOKY QUARTZ gwindel
$25 and $10 RESERVE GEMSTONE AUCTION - Ends August 2nd, 2018
Ends August 2nd, 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
FINE MINERAL COLLECTION and INVENTORY LIQUIDATION AUCTION (set 2 of 2) - FEATURING SPECIMENS FROM THE KAY ROBERTSON COLLECTION - end Thursday August 2nd, 2018
Ends Thursday, August 2nd, 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. A really cool FLUORITE specimen with a beautiful highly modified crystal associated with APATITE and QUARTZ from Pakistan
2. One of the new "coconut" ANDRADITE GARNET specimens from Peru
3. Lovely, classic QUARTZ pseudomorph after CALCITE from Dal'negorsk (ex Jack Halpern Collection)
4. An older specimen of RHODOCHROSITE on SPHALERITE from the Sweet Home Mine (mined in the 1970s by Rich Kosnar and Dave Bergman)
5. LARGE, RARE silvery-grey crystals of ANDORITE with PYRITE from the San Jose Mine, Bolivia
6. Classic "cogwheels" of BOURNONITE with sulfides and QUARTZ from Peru
7. Beautiful orange colored OPAL with multicolor flash from Ethiopia
8. A rarely seen specimen of FERRONIGERITE-2N1S from Namibia
9. Page 2 features assorted worldwide minerals (focusing on European localities) from the Kay Robertson Collection
MINERAL COLLECTION LIQUIDATION AUCTIONS (set 1 of 2) with OLD CLASSICS, NEW FINDS and RARITIES - ends Thursday Aug 2, 2018
ends Thursday August 2, 2018
at 6:30 PM (Central Time Zone)
A wonderful selection of specimens in this week's auctions with a mix of gem crystals, classics, 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 Collection. Lots of old classics here that are hard to find at any price, let alone at auction!
.
Some of the highlights from this week’s include:
1. Gem green BERYL from Brazil
2. Selection of Franklin FLUORESCENTS and worldwide SMITHSONITES
3. Classic Arizona WULFENITES
4. TOURMALINE & SMOKY QUARTZ from the Tourmaline Queen Mine
5. Fine specimens from the Irv Brown, Ken Roberts & Ted Bartel collections
6. Many classics and rarities from the Kay Robertson Collection
7. Rare Colorado MARCASITE cast after tree bark.
SPECIAL MINERAL AUCTION - FEATURING SELECTED SPECIMENS FROM THE COLLECTIONS of DR. STEPHEN SMALE and CHARLIE KEY - ends TUESDAY July 31st, 2018
Ends Thursday, July 31st, 2018
at 7:15 PM (Central Time Zone)
For the next few months, we're going to be listing special themed auctions featuring specimens from a specific locality, or a special theme, or from a particular collection, etc. We're going to do a few special auctions per month during the summer! The current theme auction features 40 specimens; 20 of which are from the collection of noted mathematician and mineral collector, Dr. Stephen Smale, and another 20 pieces from the collection of the renowned mineral dealer Charles Locke Key. All of the Smale specimens are culled from his world-famous collection of Chinese minerals, and the Key specimens represent worldwide localities.
PLEASE NOTE: This auction closes on a TUESDAY. We'll send out a reminder / announcement before it closes to you don't miss out.
SPECIAL $100 and $50 RESERVE GEMSTONE AUCTION - Ends July 26th, 2018
Ends Thursday, July 26th, 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 July 26th, 2018
Ends Thursday, July 26th, 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. Newly mined ORANGE CALCITE from Poland
2. Beautiful red RHODOCHROSITE with FLUORITE from the famous Sweet Home Mine, Colorado!
3. Classic CALCITE on FLUORITE from the Annabel Lee Mine, Illinois (ex Ross Lillie Collection)
4. Interesting new FLUORITE specimen from Pakistan showing a rare and unusual "smoky" color!
5. A gorgeous and highly aesthetic specimen of AEGIRINE with QUARTZ from Malawi (ex Francesco Bedogné Collection)
6. Superb intense green colored botryoidal WAVELLITE from Dug Hill, Arkansas
7. Rarities include GORDAITE, BERTHIERITE, GUDMUNDITE and HYDROXYCANCRINITE!
8. A really cool HALITE crystal from an unknown locality with THREE MOVING WATER BUBBLE INCLUSIONS!
9. Page 2 features assorted worldwide minerals (focusing on European localities) from the Kay Robertson Collection
MINERAL COLLECTION LIQUIDATION AUCTIONS (set 1 of 2) with OLD CLASSICS, NEW FINDS and RARITIES - ends Thursday July 26, 2018
ends Thursday July 26, 2018
at 6:30 PM (Central Time Zone)
A great mix this week featuring gem crystals from a Tourmaline collection plus old classics, 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 Collection. Lots of old classics here that are hard to find at any price, let alone at auction!
Some of the highlights from this week’s include:
1. Fine San Diego MICROCLINE
2. Superb old COPPER from Michigan
3. Irv Brown, Ken Roberts & W.S. Logan collection specimens
4. Rare large Pasto Bueno EUCLASE, FLUORITE & MUSCOVITE
5. Fine TOURMALINE and RUBY SPINEL crystal suites
6. MEXICO rarities
7. NEW Erongo AQUAMARINE FIND
8. Kay Robertson Collection classics and rarities
FINE MINERAL COLLECTION and INVENTORY LIQUIDATION AUCTION (set 2 of 2) - FEATURING SPECIMENS FROM THE KAY ROBERTSON COLLECTION - end Thursday July 19th, 2018
Ends Thursday, July 19th, 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, historic, GEMMY multi-crystal group of AQUAMARINE from Brazil (ex Fred Pough Collection!!)
2. Fine quality, rich green colored, gemmy DEMANTOID GARNET crystals on matrix from Madagascar (ex Francesco Bedogné Collection)
3. Excellent LARGE CABINET display specimen of NATIVE COPPER with CUPRITE and MALACHITE from Bolivia
4. Attractive, uniquely etched purple cubic FLUORITE crystal group from the Elmwood Mine, Tennessee
5. Superb cyclic twinned CASSITERITE from Bolivia with a GEM QUALITY crystal!
6. Beautiful classic WULFENITE crystals on CALCITE from Tsumeb
7. Rare electric blue LINARITE on matrix from Mammoth-Saint Anthony, Tiger, Arizona!
8. Page 2 features assorted worldwide minerals (focusing on European localities) from the Kay Robertson Collection
$25 and $10 RESERVE GEMSTONE AUCTION - Ends July 19th, 2018
Ends July 19th, 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
MINERAL COLLECTION LIQUIDATION AUCTIONS (set 1 of 2) with OLD CLASSICS, NEW FINDS and RARITIES - ends Thursday July 19, 2018
ends Thursday July 19, 2018
at 6:30 PM (Central Time Zone)
A great mix this week featuring gem crystals from a Tourmaline collection plus old classics, 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 Collection. Lots of old classics here that are hard to find at any price, let alone at auction!
Some of the highlights from this week’s include:
1. NEW Erongo AQUAMARINE FIND
2. Specimens from the KEN ROBERTS & ROSS LILLIE collections
including a rare and fine SPESSARTINE GARNET
3. Large Michigan COPPER, Cobalt SILVER ore slab
4. Selection of fine RADIOACTIVE species
5. Kay Robertson Collection rarities and classics
6. Rare gem Austrian SPHENE thumbnail
7. Chinese QUARTZ "prase"
SPECIAL ROUGH and CUT (GEM and CRYSTAL SETS) AUCTION - Ends July 17, 2018
Ends Tuesday, July 17th, 2018 at 7:15 PM (Central Time Zone)
We rarely offer rough and cuts, but we have a real treat this week. We have 21 sets of rough and cut gems and minerals from various worldwide localities. Plenty of your favorites including: Tanzanite, Spessartine, Kyanite and Euclase along with lots less common items like Cuprite, Wulfenite, Anhydrite and Pollucite, and hard to find rarities including, Catapleiite, Pyrargyrite, Rinkite and Preobrazhenskite!
Some sets are valued in the THOUSANDS of dollars, so be sure to check out everything. Don’t miss out on these beauties; there are some really attractive and worthwhile sets in the mix, all with $10 RESERVE STARTING BIDS.
FINE MINERAL COLLECTION and INVENTORY LIQUIDATION AUCTION (set 2 of 2) - FEATURING SPECIMENS FROM THE KAY ROBERTSON COLLECTION - end Thursday July 12th, 2018
Ends Thursday, July 12th, 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. Big lilac FLUORITE cubes with SPHALERITE from the Elmwood Mine, Tennessee
2. A lovely crystallized LEAF GOLD specimen from the Eagle's Nest Mine in California
3. Glowing orange color, thick, tabular WULFENITE on matrix from Mexico
4. Cabinet sized, metallic, silvery STIBNITE crystal from China
5. Wonderful GEMMY TOPAZ crystal weighing 86.62 grams from China
6. Beautiful multi-colored PRECIOUS OPAL on matrix from Queensland, Australia
7. Gorgeous, gemmy, multicolor "phantom" FLUORITE on QUARTZ from Spain
8. Attractive WATERMELON TOURMALINE crystal group from Brazil (ex Rolando Gioia Collection)
9. Page 2 features assorted worldwide minerals (focusing on European localities) from the Kay Robertson Collection