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Monazite-Ce (Color Change Crystals!)
Siglo XX mine, Llallagua, Bustillos Province, Potosi Department, Bolivia
6.2 x 4.4 x 2.9 cm
Tourmaline (multicolor)
Stak Nala, Skardu Road, Haramosh Mts., Gilgit, Northern Areas, Pakistan
4.9 x 4.4 x 2.4 cm
Gold (wires) (ex Rich Kosnar and Warren Prosser Collections)
Governor Vein, Banner Tunnel, Revenue Mine, Ouray County, Colorado
7.3 x 5.8 x 3.1 cm
Ferberite (twin) with Quartz
Tasna mine, Rosario section of Cerro Tasna, Nor Chichas Province, Potosi Department, Bolivia
5.4 x 4.3 x 3.3 cm
Augelite (large crystal!)
Machacamarca Mine, near Colavi, Potosi Department, Bolivia
6.2 x 3.5 x 2.7 cm
Valentinite (rare)
Colavi mine, Cornelio Saavedra Province, Potosi Department, Bolivia
5.6 x 4.7 x 4.7 cm
Vauxite with Paravauxite, Metavauxite and Sigloite (rare material)
Siglo XX mine, Llallagua, Bustillo Province, Potosi Department, Bolivia (type locality for four species)
9.4 x 6.8 x 3.7 cm
Cassiterite (twins) with Quartz (With Smoky Quartz "Phantoms"!)
Viloco mine, Loayza Province, La Paz Department, Bolivia
6.0 x 5.7 x 4.3 cm
Siderite on Pyrite with Stannite
Siete Suyos mine, Atocha-Quechisla District, Sud Chichas Province, Potosu Department, Bolivia
4.1 x 3.4 x 2.3 cm
Vivianite
Siglo XX mine, Llallagua, Bustillo Province, Potosi Department, Bolivia
5.2 x 3.7 x 2.1 cm
Bournonite ("cogwheel")
Machacamarca Mine, near Colavi, Potosi Department, Bolivia
2.4 x 1.8 x 1.7 cm
Boracite
Alto Chapare, Chapare Province, Cochabamba Department, Bolivia
4.3 x 3.9 x 2.7 cm
Grossular ("Hessonite") (ex Rich Kosnar Collection)
Laietto, Condove, Val di Susa, Torino, Piemonte, Italy
2.6 x 2.0 x 1.6 cm
Pyrargyrite on Quartz
Guanajuato, Mexico
8.3 x 6.6 x 3.7 cm
Dioptase
Brazzaville, Republic of Congo (Brazzaville)
4.8 x 3.8 x 1.7 cm
Aquamarine (strong color!) (ex Rich Kosnar Collection)
Sawtooth Mountains, Idaho
2.0 x 1.7 x 1.4 cm
Rhodochrosite on Quartz (mined 1978) (ex Rich Kosnar collection)
Sweet Home mine, near Alma, Park County, Colorado
3.3 x 2.5 x 1.2 cm
Pyrite (ex Rich Kosnar Collection)
400 Foot Stope, 2100 Foot Level, Camp Bird Mine, Ouray County, Colorado
4.3 x 2.8 x 1.9 cm
Amazonite (ex Rich Kosnar and Clarence Coil Collections)
Top of Pike's Peak, El Paso County, Colorado
6.5 x 5.8 x 4.8 cm
Fluorite (strong color) (mined 1977) (ex Rich Kosnar Collection)
Sweet Home mine, near Alma, Park County, Colorado
3.3 x 2.9 x 2.1 cm
Azurite with Malachite (ex Brian Kosnar collection)
Hilltop Mine (Sherman Mine), Leadville, Lake County, Colorado
4.5 x 3.8 x 2.6 cm
Rhodochrosite (ex Brian Kosnar collection)
Emma Mine, Butte District, Silver Bow County, Montana
6.4 x 3.8 x 2.4 cm
Prehnite ("cactus" cast after Anhydrite)
Lower New Street, Paterson, Passaic County, New Jersey
6.5 x 4.8 x 4.4 cm
Stellerite (excellent quality) (ex Rich Kosnar collection)
Braen's Quarry (Sam Braen's Quarry), Haledon, Passaic County, New Jersey
8.3 x 5.2 x 4.8 cm
Kyanite (classic material)
Pizzo Forno, Chironico Valley, Leventina, Ticino (Tessin), Switzerland
5.8 x 4.4 x 1.7 cm
Azurite and Malachite
Liufengshan Mine, Anqing-Guichi Mining District, Guichi District, Chizhou Prefecture, Anhui Province, China
6.0 x 4.6 x 1.6 cm
Spessartine Garnet on Microcline
Wushan, Tongbei, Yunxiao, Zhangzhou Prefecture, Fujian, East Region, China
6.8 x 5.5 x 3.8 cm
Ametrine
Anahi, Bolivia
6.53 ct, 14.37 mm x 9.24 mm
Star Garnet (6-ray Star)
Idaho
4.62 ct, 12.5 mm x 8.5 mm
Hematite "kidney ore" with Specular Hematite (rare combo) ex Belsky Coll.
Cleator Moor, Cumbria, England
5.9 x 4.5 x 2.2 cm