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$600.00 Bournonite / Locality - Viboras Mine, Machacamarca, Potosi Department, Bolivia Bournonite / Locality - Viboras Mine, Machacamarca, Potosi Department, Bolivia $225.00 Bournonite on Quartz / Locality - Viboras Mine, Machacamarca, Potosi Department, Bolivia Bournonite on Quartz / Locality - Viboras Mine, Machacamarca, Potosi Department, Bolivia $350.00 Bournonite (“cogwheels”) / Locality - Viboras Mine, Machacamarca, Potosi Department, Bolivia Bournonite (“cogwheels”) / Locality - Viboras Mine, Machacamarca, Potosi Department, Bolivia $125.00 Bournonite (“cogwheel”) on matrix / Locality - Viboras Mine, Machacamarca, Potosi Department, Bolivia Bournonite (“cogwheel”) on matrix / Locality - Viboras Mine, Machacamarca, Potosi Department, Bolivia $800.00 Bournonite (unique specimen) / Locality - Viboras Mine, Machacamarca, Potosi Department, Bolivia Bournonite (unique specimen) / Locality - Viboras Mine, Machacamarca, Potosi Department, Bolivia $175.00 Bournonite (“cogwheel”) / Locality: Viboras Mine, Machacamarca, Potosi Department, Bolivia Bournonite (“cogwheel”) / Locality: Viboras Mine, Machacamarca, Potosi Department, Bolivia $300.00 Bournonite on Quartz / Locality - Viboras Mine, Machacamarca, Potosi Department, Bolivia Bournonite on Quartz / Locality - Viboras Mine, Machacamarca, Potosi Department, Bolivia $900.00 Childrenite (rare) on Quartz / Locality - Siglo XX Mine (Siglo Veinte Mine), Llallagua, Bustillo Province, Potosi Department, Bolivia Childrenite (rare) on Quartz / Locality - Siglo XX Mine (Siglo Veinte Mine), Llallagua, Bustillo Province, Potosi Department, Bolivia $400.00 Childrenite / Locality - Siglo XX Mine (Siglo Veinte Mine), Llallagua, Bustillo Province, Potosi Department, Bolivia Childrenite / Locality - Siglo XX Mine (Siglo Veinte Mine), Llallagua, Bustillo Province, Potosi Department, Bolivia $1,500.00 K-Feldspar (var: Adularia) (superb twin) with "Chlorite" / Locality - Agenetal (Aeginental), Ulrichen, Goms, Wallis (Valais), Switzerland K-Feldspar (var: Adularia) (superb twin) with "Chlorite" / Locality - Agenetal (Aeginental), Ulrichen, Goms, Wallis (Valais), Switzerland $3,000.00 Vivianite (gemmy crystals) on Siderite / Locality - Huanuni Mine, Huanuni, Dalence Province, Oruro Department, Bolivia Vivianite (gemmy crystals) on Siderite / Locality - Huanuni Mine, Huanuni, Dalence Province, Oruro Department, Bolivia $800.00 Cerussite (GEMMY smoky colored "snowflake" twin) / Locality - Tsumeb Mine, Tsumeb Otjikoto Region, Namibia Cerussite (GEMMY smoky colored "snowflake" twin) / Locality - Tsumeb Mine, Tsumeb Otjikoto Region, Namibia $1,950.00 Kunzite (doubly-terminated) / (623 grams) / Locality - Nuristan, Afghanistan Kunzite (doubly-terminated) / (623 grams) / Locality - Nuristan, Afghanistan $600.00 Dioptase on Calcite (classic material) / Locality - Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia Dioptase on Calcite (classic material) / Locality - Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia $2,400.00 Gold (fine crystals) (3.18 grams) / Locality - Serra do Caldeirao claims, Pontes e Lacerda, Jauru District, Mato Grosso, Brazil Gold (fine crystals) (3.18 grams) / Locality - Serra do Caldeirao claims, Pontes e Lacerda, Jauru District, Mato Grosso, Brazil $35.00 $70.00 Microcline (variety "Amazonite") / Locality - Lake George Area, Park County, Colorado Microcline (variety "Amazonite") / Locality - Lake George Area, Park County, Colorado $45.00 $90.00 Microcline (variety "Amazonite") / Locality - Lake George Area, Park County, Colorado Microcline (variety "Amazonite") / Locality - Lake George Area, Park County, Colorado $37.50 $75.00 Microcline (variety "Amazonite") / Locality - Lake George Area, Park County, Colorado Microcline (variety "Amazonite") / Locality - Lake George Area, Park County, Colorado $20.00 $40.00 Microcline (variety "Amazonite") / Locality - Lake George Area, Park County, Colorado Microcline (variety "Amazonite") / Locality - Lake George Area, Park County, Colorado $17.50 $35.00 Microcline (variety "Amazonite") / Locality - Lake George Area, Park County, Colorado Microcline (variety "Amazonite") / Locality - Lake George Area, Park County, Colorado