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
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Aquamarine (14.25 grams)
Itatiaia mine, Conselheiro Pena, Doce valley, Minas Gerais, Brazil
3.4 x 2.4 x 1.8 cm
Pyrite
Navajun, La Rioja, Spain
5.0 x 4.8 x 4.0 cm
Rhodochrosite
Wutong (Wudong) Mine, Liubao ("Babu"), Cangwu Co., Wuzhou Prefecture, Guangxi Zhuang Autonomous Region, China
2.8 x 2.4 x 1.1 cm
Stibnite (ex Rich Kosnar Collection)
La Salvadora Mine, Oruro city, Cercado Province, Oruro Department, Bolivia
7.1 x 2.4 x 1.7 cm
Fluorite (color change crystals) (new find)
Koh-i-Maran, Kalat District, Balochistan (Baluchistan), Pakistan
6.8 x 6.2 x 3.3 cm
Vesuvianite (Manganoan) (ex Charlie Key Collection)
Jeffrey Mine, Asbestos, Les Sources RCM, Estrie, Quebec, Canada
3.1 x 2.3 x 2.3 cm
Calcite (scepter)
Chenzhou Prefecture, Hunan Province, China
6.3 x 5.2 x 3.0 cm
Hematite (ex Scott Williams Collection)
Thomas Range, Juab County, Utah
2.3 x 1.7 x 1.2 cm
Vesuvianite (6 piece set) (ex Charlie Key Collection)
Jeffrey Mine, Asbestos, Les Sources RCM, Estrie, Quebec, Canada
1.8 x 0.7 x 0.4 cm to 1.5 x 0.4 x 0.3 c
Catapleiite (ex Charlie Key Collection)
Poudrette Quarry, Mont Saint-Hilaire, La Vallee-du-Richelieu RCM, Monteregie, Quebec, Canada
0.8 x 0.5 x 0.1 cm
Smithsonite (beautiful colors)
El Refugio Mine, Choix, Mun. de Choix, Sinaloa, Mexico
9.7 x 9.3 x 4.2 cm
Topaz (classic material)
Tepetate, Mun. de Villa de Arriaga, San Luis Potosu, Mexico
1.7 x 1.4 x 0.8 cm
Cassiterite (cyclic twins)
Viloco Mine, Loayza Province, La Paz Department, Bolivia
3.2 x 3.0 x 1.7 cm
Chrysoprase (old classic material)
Szklary Chrysoprase Mine, Szklary (Glasendorf), Zabkowice (Frankenstein), Zabkowice District, Lower Silesia (Dolnoslaskie), Poland
4.3 x 3.8 x 1.3 cm
Fluorite with Quartz (ex Dr. Stephen Smale Collection)
Xianghuapu Mine, Xianghualing Sn-polymetallic ore field, Linwu Co., Chenzhou Prefecture, Hunan Province, China
5.7 x 5.6 x 3.2 cm
Boracite (classic material)
Bernburg, Stassfurt Potash Deposit, Saxony-Anhalt, Germany
5.3 x 3.7 x 3.3 cm
Rhodonite (ex Rolando Gioia Collection)
Morro da Mina Mine, Conselheiro Lafaiete, Minas Gerais, Brazil
1.7 x 1.4 x 0.8 cm
Natrolite (GEM quality)
Chimney Rock Quarry, Bound Brook, Bridgewater Township, Somerset County, New Jersey
6.5 x 0.8 x 0.8 cm
Diaspore (rare color)
Mung Hsu (Monghsu; Maing Hsu), Loilem District (Loilen District), Shan State, Myanmar (Burma)
1.0 x 0.8 x 0.2 cm
Fluorite Carving, Turtle
Jiangxi Province, China
76.85 grams (384.25 carats), 50 mm x 36 mm x 26 mm
Smoky Quartz (ex Willard Wulff Collection - collected Wulff)
Daniels Ranch, near Crystal Peak, Teller County, Colorado
7.1 x 2.6 x 1.6 cm
Anatase with Rutile
Cuiaba District, Gouveia, Minas Gerais, Brazil
2.8 x 0.7 x 0.6 cm
Tourmaline (bi-color) (ex Kay Robertson Collection)
Pala District, San Diego County, California
3.8 x 3.2 x 1.7 cm
Kyanite (classic Alpine material) (ex Kay Robertson Collection)
Sponda Alp - Pizzo Forno, Chironico Valley, Leventina, Ticino (Tessin), Switzerland
6.7 x 4.6 x 1.7 cm
Albite (fine twinned crystals) (ex Kay Robertson Collection)
Nolla Valley, Thusis, Domleschg, Hinterrhein Valley, Grischun, Switzerland
2.3 x 2.1 x 1.5 cm
Paravauxite with Sigloite (very rare) (ex Kay Robertson Collection)
Siglo XX Mine, Llallagua, Bustillo Province, Potosi Department, Bolivia (type locality for both species)
4.7 x 4.2 x 2.6 cm
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