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$140.00 Opal / (variety - “Opal-AN”) / (variety - “Hyalite Opal”) / (“Blood Vessel Opal”) / Locality - San Luis Potosi, Mexico $400.00 Opal / (variety - “Opal-AN”) / (variety - “Hyalite Opal”) / (“Blood Vessel Opal”) / Locality - San Luis Potosi, Mexico $300.00 Opal / (variety - “Opal-AN”) / (variety - “Hyalite Opal”) / (“Blood Vessel Opal”) / Locality - San Luis Potosi, Mexico $800.00 Corundum / (variety - “Sapphire”) / (Bicolor Twin) / Locality - Okampitiya, Uva Province, Sri Lanka $250.00 Quartz / (variety - “Ametrine”) / Locality - Anahi (Anay), Santa Cruz, Bolivia $1,100.00 Fluorite / Locality - Sunnyside Mine, near Gladstone, San Juan County, Colorado $700.00 Quartz / (variety - "Chalcedony") / (variety - "Agate") / ("Grape Chalcedony / Grape Agate") / Locality - Mamuju area, Sulawesi, Indonesia $800.00 Fluorite with Rhodochrosite / Locality - Sunnyside Mine, near Gladstone, San Juan County, Colorado $800.00 Calcite with Siderite / Locality - Billy Creek Wildlife Refuge, Ouray County, Colorado $150.00 Creedite / Locality - Henderson Mine, west of Empire, Dailey District (Jones Pass District), Clear Creek County, Colorado $900.00 Brookite / Locality - Kharan District, Balochistan, Pakistan $1,500.00 Brookite / Locality - Kharan District, Balochistan, Pakistan $400.00 Ludlamite with Vivianite on matrix / Locality: Huanuni mine, Huanuni, Dalence Province, Oruro Department, Bolivia $500.00 Monazite-(Ce) with Quartz / Locality - Siglo XX Mine (Siglo Veinte Mine), Llallagua, Bustillo Province, Potosi Department, Bolivia $245.00 Leaf Gold / Locality - Little Johnnie Mine (Ibex Mine), Leadville, Lake County, Colorado $325.00 Leaf Gold / Locality - Little Johnnie Mine (Ibex Mine), Leadville, Lake County, Colorado $2,650.00 Calaverite and Fluorite / Locality - Mary McKinney Mine, Anaconda, Cripple Creek District, Teller County, Colorado $450.00 Gold in Quartz with sulfides (matched set) / Locality - Sunnyside Mine, near Gladstone, Eureka District, San Juan County, Colorado $350.00 Gold with Pyroxmangite and sulfides plus Quartz / Locality - Sunnyside Mine, near Gladstone, Eureka District, San Juan County, Colorado $400.00 Gold with Coloradoite, Hessite and Sylvanite in Quartz / Locality - Bessie G Mine, La Plata County, Colorado