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
Filter By

Calcite (twinned) (ex Kay Robertson Collection)
Faylor-Middle Creek Quarry, Winfield, Union County, Pennsylvania
3.7 x 2.3 x 1.8 cm
Azurite on Chalcoalumite (ex Kay Robertson Collection)
Grandview Mine, Grand Canyon, Coconino County, Arizona
4.7 x 2.6 x 1.8 cm
Cookeite "cast" after Spodumene (ex Kay Robertson Collection)
Governador Valadares, Minas Gerais, Brazil
8.0 x 1.8 x 1.0 cm
Chrysocolla on Hemimorphite (ex Kay Robertson Collection)
79 Mine, Chilito, Hayden area, Banner District, Dripping Spring Mts, Gila County, Arizona
6.3 x 2.3 x 1.8 cm
Brazilianite with Albite (ex Rolando Gioia Collection)
Linopolis, Divino das Laranjeiras, Minas Gerais, Brazil
4.7 x 2.4 x 1.7 cm
Spessartine (new find)
Garnet Hill, Ely, Robinson District, White Pine County, Nevada
4.2 x 3.7 x 2.5 cm
Green Sphalerite on Prehnite (rare combo) (ex Kay Robertson Collection)
Diabase quarry, Hartenrod, Gladenbach, Dillenburg District, Hesse, Germany
5.0 x 3.2 x 1.3 cm
Adamite (Cuprian)
Ojuela Mine, Mapimi, Durango, Mexico
5.3 x 3.1 x 0.9 cm
Calcite ("Angel Wings") (ex Kay Robertson Collection)
Schneeberg District, Erzgebirge, Saxony, Germany
8.3 x 8.1 x 4.7 cm
Andorite (excellent quality)
San Jose mine, Oruro City, Cercado Province, Oruro Department, Bolivia
3.1 x 2.6 x 0.7 cm
Mineral Auctions