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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 AUCTION: RARE SPECIES & CLASSIC OLD MINERALS
from the Kay Robertson Mineral Collection
ends TUESDAY January 8th, 2019
Specimens Available: 75
NOTE SPECIAL END DAY: TUESDAY January 8th, 2019
at 630 PM (Central Time Zone)!
The Kay Robertson collection has thus far afforded a great deal of intellectual and mineral pleasure to us here at The Arkenstone, as well as collectors around the globe. Many specimens are of historical and mineralogical interest, so working with them has been a truly gratifying experience.
With 5 updates and several previous auctions already done, we thought it would be a fun change of pace to produce a totally dedicated "Kay auction," and let things go where they may. Please note that a number of these specimens were purchased by Kay 50-60 years ago, at prices that ranged from several dollars to several hundreds of dollars at the time. If these were the prices a half-century ago, just imagine what the possible values are now. There might be some real bargains to be had! Text and photos by collector, Jeff Starr.
For those unfamiliar with the Kay Robertson Collection, Kay is a prominent California collector who specialized in European classics (see our blog at www. https://www.irocks.com/kay-robertson-a-treasure-in-the-mineral-collecting-world ; and the 50+ page article in the German Magazine "Mineralien Welt" November-December 2017).
Happy hunting!
Closed Auctions
SPECIAL $100 and $50 RESERVE GEMSTONE AUCTION - Ends December 13th, 2018
Ends Thursday, December 13th, 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 December 13th, 2018
Ends Thursday, December 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 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, Geary Murdock 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, stout, jet-black FERBERITE crystal group from the Tasna Mine, Bolivia
2. Gemmy, beautiful pink color ETCHED & SMOOTH / LUSTROUS MORGANITE BERYL crystal from Brazil
3. A 5-piece group of bright MULTI-COLOR OPAL specimens from ETHIOPIA
4. Classic "tree"-like display specimen of CALCITE from Bisbee, Arizona
5. Old classic fine quality PYROMORPHITE from the Bunker Hill Mine, Idaho (ex Geary Murdock Collection)
6. Hard to find US specimens, such an old time MORGANITE from the Elizabeth R. Mine in California and a rarely seen ROSE QUARTZ from Maine (ex Geary Murdock Collection)
7. Gorgeous beautiful purple colored FLOURESCENT HACKMANITE SODALITE from Afghanistan (ex Francesco Bedogné Collection)
8. Page 2 features assorted worldwide minerals (focusing on European and North American localities) from the Kay Robertson Collection
HOLIDAY SEASON MINERAL COLLECTION AUCTIONS SET #1:
- ends Thursday Dec 13th, 2018
ends Thursday Dec 13, 2018
at 6:30 PM (Central Time Zone)
NEW COLLECTIONS PURCHASED! Look for more old classics, especially from Europe and the East Coast, from a Brazilian collection and from the collections of David Burgess and Kay Robertson. Our auctions present the largest 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 60 years of collecting history from the Kay Robertson Collection with so many 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 AQUAMARINES from Pakistan and Brazil
2. Classic old ANGLESITE from Sardinia
3. Excellent COBALTOAN CALCITES
4. Excellent AMETHYST scepters from Mexico
5. Rare old HYDROXYLHERITE from the Xanda Mine
6. Old NAGYAGITE from the Type Locality
7. Rhodochrosites from the W.S. Logan Collection
8 Fine TOURMALINES from Brazil
9. Large VARISCITE nodule
10. Large rich emerald-green FLUORITE from the Rogerley Mine
and other English specimens from the Dr. S. Moreton Collection
$25 and $10 RESERVE GEMSTONE AUCTION - Ends December 6th, 2018
Ends December 6th, 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
SPECIAL MINERAL AUCTION - $499 RESERVE LIQUIDATION SPECIMENS - ends Thursday, December 6, 2018
Ends Thursday, December 6, 2018 at 6:45 PM (Central Time Zone)
Continuing with our special themed auctions we've put together a selection of higher-end specimens all starting with $499 reserve bids. Every piece in this auction is valued at $1,500 MININUM in the inventory (some are valued at $3,000+). There are plenty of classic and contemporary, fine quality, attractive display pieces from around the world.
PLEASE NOTE: Due to the larger size and weight of some of the pieces in this auction, 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-THANKSGIVING MINERAL COLLECTION AUCTIONS:
featuring OLD CLASSICS, GEM CRYSTALS and RARE SPECIES - ends Thursday Dec 6th, 2018
ends Thursday Dec 6, 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 1960s-90s specimens from the collections of Paul Zerfass, Ted Bartels, Tom Wolfe and Barratt Phillips Collections, and 60 years of collecting history from the Kay Robertson Collection. 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. Gemmy large RUBELLITE TOURMALINE from the Steve Smale Collection
2. Rare large RHODOCHROSITE from Kazakhstan
3. Bizarre large casted QUARTZ
4. Classic English GALENA & ANKERITE from the Gene Meieran Collection
5. Exotic and rare MANGANOAN CALCITE combination from the Wessels Mine
6. Fine DIOPSIDE thumbnail from the Merelani Hills
7. Unique Mexican CHALCEDONY pseudomorph from the Ken Roberts Collection
SPECIAL $100 and $50 RESERVE GEMSTONE AUCTION - Ends November 29th, 2018
Ends Thursday, November 29th, 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 29th, 2018
Ends Thursday, November 29th, 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. Tsumeb minerals like a gemmy reticulated CERUSSITE and a COBALTOAN SMITHSONITE
2. A unique etched sculptural deep purple cubic FLUORITE specimen from Illinois (ex Ross Lille Collection)
3. Rarely seen specimen of "Reef" GOLD from Georgia!
4. An unusually FLUORESCENT AQUAMARINE from China
5. Old classic botryoidal SPHALERITE with GEM BARITE from Romania
6. A cool polished sphere of classic purple CHAROITE from Russia
7. Beautiful electric blue HEMIMORPHITE from China
8. Page 2 features assorted worldwide minerals (focusing on European and North American localities) from the Kay Robertson Collection
THANKSGIVING MINERAL COLLECTION AUCTIONS (set 1 of 2) featuring OLD CLASSICS, GEM CRYSTALS and RARE SPECIES - ends Thursday Nov 29, 2018
ends Thursday Nov 29, 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 1960s-90s specimens from the collections of Paul Zerfass, Ted Bartels, Tom Wolfe and Barratt Phillips Collections, and 60 years of collecting history from the Kay Robertson Collection. 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 Cavnic MANGANOAN CALCITE with large GYPSUM casts
2. Old and classic specimens from the Paterson Museum
3. NEW FIND of AQUAMARINE from the Erongos
4. Classic and rare ENGLISH specimens
5. RHODOCHROSITES from Logan Collection
6. Rare gem pink TOURMALINE from Brazil
7. Superb BOURNONITE from Bolivia
8. Large old PREHNITE from New Jersey
9. Gorgeous and rare gemmy SCHEELITE and QUARTZ combo
10. Rare and impressive large SMITHSONITE from New Mexico
11. Classic large ANGLESITE crystals on GALENA
SPECIAL MINERAL AUCTION - SPECIMENS FROM THE COLLECTION of GEARY MURDOCK - ends TUESDAY November 27, 2018
Ends TUESDAY November 27th, 2018
at 6:30 PM (Central Time Zone)
Continuing with our special themed auctions we are thrilled for our next installment featuring specimens from the collection of Geary Murdock.
Geary Murdock was well-known in the mineral community as an accomplished field collector. He was credited for finding arguably the finest quality gem Aquamarine crystals from the Sawtooth Mountains of Idaho. We recently acquired specimens from Geary's collection and have assembled an introductory 30 piece auction to familiarize everybody with the sort of material he collected. Look for Geary's specimens to pop up in the auctions in the coming weeks and 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.
$50 RESERVE GEMSTONE AUCTION - Ends SATURDAY November 24th, 2018
Ends SATURDAY, November 24th, 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 are $50 this week.
Questions about Gems?: CONTACT Gem admin Brian Kosnar: click here
THANKSGIVING WEEK FINE MINERAL COLLECTION and INVENTORY LIQUIDATION AUCTION - end SATURDAY November 24th, 2018
Ends SATURDAY, November 24th, 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 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, Steve Smale, Rolando Gioia, Charlie Key, John Arnaud and Dennis Uridil. 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 doubly-terminated CALCITE on matrix from the Elmwood Mine, Tennessee
2. VERY rare beautiful greenish-blue GRANDIDIERITE on matrix from Madagascar
3. Wonderful, striking TRAPICHE HABIT SAPPHIRE from Myanmar (Burma)
4. Excellent LARGE fine quality crystallized cabinet display specimen of the rare sulfosalt ZINKENITE from Bolivia
5. GEM QUALITY AQUAMARINE with pink APATITE on matrix from Pakistan
6. A few fantastic FLUORITES from the Chinese collection of Dr. Stephen Smale
7. Great crystallized "leaf" GOLD specimen from Brazil
8. Attractive scepter and reverse scepter habit crystals of AMETHYST from Bolivia
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