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Tourmaline
Afghanistan
0.33 ct, 4.42 mm
Iolite (Cordierite)
Tanzania
0.43 ct, 5.10 mm
Rhodochrosite
Argentina
11.02 ct, 15.86 mm x 11.91 mm
Zircon
Cambodia
0.38 ct, 4.56 mm x 3.55 mm
Rhodolite
Tanzania
0.94 ct, 7.58 mm x 5.12 mm
Spinel (slight color shift)
Burma
0.51 ct, 5.64 mm x 3.95 mm
Spessartine Garnet (Mandarin Garnet)
Nigeria
0.42 ct, 4.25 mm
Sapphire
Sri Lanka
0.19 ct, 3.88 mm x 3.11 mm
Amazonite
Peru
3.21 ct, 12.16 mm x 8.08 mm
Green Opal (unusual material)
Brazil
10.86 ct, 15.07 mm
Agate
Yellowstone River in southeastern Montana
121.00 ct!, 51.8 mm x 34.4 mm x 20.7 mm
Enstatite (great quality and color)
Morogoro, Tanzania
0.56 ct, 4.95 mm
Smoky Quartz
Lake George area, Park County, Colorado
62.37 ct!, 32.47 mm x 17.20 mm
Ruby / Zoisite (good form)
Mt Kilimanjaro, Tanzania
62.07 ct, 31.21 mm
Zircon
Cambodia
1.62 ct, 9.14 mm x 6.07 mm
Quartz with Rutile and Hematite inclusions
Madagascar
4.57 ct, 13.9 mm x 11.4 mm
Hambergite (rare)
Madagascar
0.79 ct, 6.4 mm x 5.3 mm
Dioptase
Kimbedi, Pool Region, Republic of the Congo
6.0 x 5.6 x 3.1 cm
Cassiterite (gemmy and good quality)
Viloco mine, Loayza Province, La Paz Department, Bolivia
2.8 x 2.3 x 2.1 cm
Pyrite Concretion
Dongchuan District, Kunming Prefecture, Yunnan Province, China
6.3 x 5.7 x 5.1 cm
Copper pseudomorph after Aragonite with Malachite, Cuprite, Chrysocolla and Connellite
Corocoro District, Pacajes Province, La Paz Department, Bolivia
3.2 x 2.6 x 1.8 cm
Vivianite
Tomokoni adit, near Canutillos, Colavi, Saavedra Province, Potosi Department, 36 km NE of Potosi, Bolivia
3.6 x 2.7 x 2.7 cm
Ludlamite
Huanuni mine, Dalence Province, Oruro Department, Bolivia
1.2 x 1.0 x 0.4 cm
Amethyst (minor reverse scepter)
Bombori, Potosi Department, Bolivia
3.0 x 2.3 x 2.2 cm
Scorzalite (rare) (new find)
Estano Orcko mine, Machacamarca District (Colavi District), Saavedra Province, Potosu Department, Bolivia
4.8 x 3.9 x 3.1 cm
Bournonite (mined in 2003)
Machacamarca Mine, near Colavi, Potosi Department, Bolivia
3.8 x 2.8 x 2.7 cm
Vauxite (rare)
Siglo XX mine, Llallagua, Bustillo Province, Potosi Department, Bolivia (type locality)
2.6 x 2.0 x 0.7 cm
Magnetite
Cerro Huanaquino, Potosi Department, Bolivia
8.5 x 4.3 x 2.2 cm
Gold on Quartz
Little Johnnie Mine (Ibex Mine), Leadville, Lake County, Colorado
1.1 x 0.6 x 0.6 cm
Mn-Calcite on Quartz (ex Brian Kosnar Collection)
Portland Mine, in the Ouray Amphitheater, east of the town of Ouray, Ouray County, Colorado
3.7 x 2.6 x 1.9 cm