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DT gem Topaz crystal (203 grams)
Dassu, Shigar Valley, Skardu District, Baltistan, Pakistan
4.5 x 4.2 x 3.8 cm
Peridot
Pakistan
3.66 ct, 11.54 mm x 6.84 mm
Pendant and Earrings, Amethyst (good color) in Sterling Silver (designed and made by Brett Kosnar)
Brazil
3.3 cts (approximate total weight of gems), 5.7 mm (stones)
Danburite (rare blue color)
Alto Chapare, Chapare Province, Cochabamba Department, Bolivia
3.8 x 3.4 x 2.3 cm
Anglesite on Galena (Marty Lewadny Coll.)
Touissit, Oujda-Angad Province, Morocco
4.4 x 3.2 x 2.4 cm
Orpiment with Barite (uncommon locale)
Gold Bar mine, Antelope District, Eureka Co., Nevada
5.0 x 3.0 x 2.2 cm
Cassiterite (old classic) Smithsonian Coll.
Horni Slavkov (Schlaggenwald), Karlovy Vary Region, Bohemia, Czech Republic
3.2 x 3.1 x 2.8 cm
Andradite (new find)
Huanggang Mine, Hexigten Banner (Keshiketeng Co.), Ulanhad League (Chifeng Prefecture), Inner Mongolia Autonomous Region, China
4.7 x 3.7 x 1.6 cm
Uraninite with Uranophane and "Gummite" (ex Foote Specimens)
Spruce Pine District, Mitchell Co., North Carolina, USA
Up to 3.6 x 3.0 x 2.8 cm
Andradite (var: Demantoid)
Tubussis Farm 22 (Tubussis; Tubusis; Tubessis), Karibib District, Erongo Region, Namibia
5.7 x 4.0 x 3.0 cm
Cassiterite with Quartz
Viloco mine, Loayza Province, La Paz Department, Bolivia
8.2 x 6.7 x 2.1 cm
Beryl var. Morganite ex Obodda
Papra Mine, near Paprok, Nuristan Prov., Afghanistan
4.3 x 3.5 x 2.7 cm
Gibbsite (great color)
Wenshan Autonomous Prefecture, Yunnan Province, China
1.6 x 0.8 x 0.6 cm
Goldmanite (rare garnet species)
Rybnucek, Pezinok Co., Bratislava Region, Slovakia
5.6 x 4.3 x 2.0 cm
Franckeite with Galena and Antimony-rich Tennantite
San Jose mine, Oruro City, Cercado Province, Oruro Department, Bolivia
14.3 x 8.3 x 4.3 cm
Vivianite
Siglo XX mine, Llallagua, Bustillo Province, Potosi Department, Bolivia
4.7 x 3.9 x 3.3 cm
Monazite-Ce (color change crystals)
Siglo XX mine, Llallagua, Bustillo Province, Potosi Department, Bolivia
8.0 x 5.1 x 2.2 cm
Pyrite
Tasna Mine, Rosario Section of Cerro Tasna, Atocha-Quechisla District, Nor Chichas Province, Potosi Department, Bolivia
4.8 x 4.3 x 3.3 cm
Amethyst with Calcite* (*Calcite is rare from Bolivia)
Bombori, Potosi Department, Bolivia
5.2 x 3.0 x 2.8 cm
Apatite with Quartz and Siderite
Siglo XX mine, Llallagua, Bustillos Province, Potosi Department, Bolivia
3.3 x 2.4 x 1.7 cm
Gypsum (hard to find material)
Salar de Uyuni, Nor Lipez Province, Potosi Department, Bolivia
10.6 x 9.2 x 4.0 cm
Azurite with Malachite on Chrysocolla (ex Brian Kosnar and Harold Urish Collections)
Morenci Mine, Clifton-Morenci District, Shannon Mts, Greenlee County, Arizona
4.3 x 3.1 x 2.3 cm
Copper (good sized dodecahedron)
Kearsarge Mine, Kearsarge, Houghton County, Michigan
3.1 x 2.8 x 1.9 cm
Pyromorphite (Arsenian) (ex Arnaud Collection)
Bunker Hill Mine, Kellogg, Coeur d'Alene District, Shoshone County, Idaho
4.7 x 3.4 x 3.0 cm
Pyrite (ex Roy Evans Collection)
Dallas, Dallas Co., Texas, USA
2.9 x 2.3 x 1.2 cm
Sapphire (ex Rich Kosnar Collection)
Helena area, Spring Hill District, Lewis and Clark County, Montana
0.7 x 0.6 x 0.1 cm
Prehnite (cast after Anhydrite)
Upper New Street Quarry, Paterson, Passaic Count, New Jersey
8.0 x 4.8 x 3.8 cm
Chabazite (ex Brian Kosnar Collection)
Upper New Street Quarry, Paterson, Passaic Count, New Jersey
5.8 x 4.3 x 3.7 cm
Quartz "casts" after Anhydrite on Quartz
Vein Outcrop, Dawn of Day (Sunshine) Mine, Cement Creek, Red Mountain District, San Juan County, Colorado
6.1 x 4.2 x 3.2 cm
Rhodochrosite (ex Brian Kosnar Collection)
Sunnyside mine, near Silverton, San Juan County, Colorado
2.3 x 2.0 x 1.2 cm