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Opal-AN, Schorl, Quartz
Erongo Mountains, Karibib Constituency, Erongo Region, Namibia
Opal-AN, Schorl, Quartz
Erongo Mountains, Karibib Constituency, Erongo Region, Namibia
Opal-AN, Schorl, Quartz
Erongo Mountains, Karibib Constituency, Erongo Region, Namibia
Opal-AN, Schorl, Quartz
Erongo Mountains, Karibib Constituency, Erongo Region, Namibia
Opal-AN, Schorl, Smoky Quartz
Erongo Mountains, Karibib Constituency, Erongo Region, Namibia
Opal-AN, Schorl, Smoky Quartz
Erongo Mountains, Karibib Constituency, Erongo Region, Namibia
Opal-AN, Schorl, Smoky Quartz
Erongo Mountains, Karibib Constituency, Erongo Region, Namibia
Opal-AN, Schorl, Smoky Quartz
Erongo Mountains, Karibib Constituency, Erongo Region, Namibia
Opal-AN, Schorl, Smoky Quartz
Erongo Mountains, Karibib Constituency, Erongo Region, Namibia
Chalcedony, Opal-AN
Lesbos, North Aegean, Greece
Opal-AN, Chalcedony
San Luis Potosí, Mexico
Opal-AN, Chalcedony
San Luis Potosí, Mexico
Opal-AN, Chalcedony
San Luis Potosí, Mexico
Chalcedony, Fluorite, Opal-AN
SK Star Claim #2, Thomas Range, Juab County, Utah, USA
Chalcedony, Fluorite, Opal-AN
SK Star Claim #2, Thomas Range, Juab County, Utah, USA
Chalcedony, Fluorite, Opal-AN
SK Star Claim #2, Thomas Range, Juab County, Utah, USA
Moss Opal, Chalcedony, Opal-AN
Chrysoprase and Moss Opal deposits, River Pines, Fiddletown Mining District, Amador County, California, USA
Moss Opal, Chalcedony, Opal-AN
Chrysoprase and Moss Opal deposits, River Pines, Fiddletown Mining District, Amador County, California, USA
Moss Opal, Chalcedony, Opal-AN
Chrysoprase and Moss Opal deposits, River Pines, Fiddletown Mining District, Amador County, California, USA
Eosphorite, Zanazziite, Montebrasite
Ilha claim, Taquaral, Itinga, Minas Gerais, Brazil
Eosphorite, Zanazziite, Montebrasite
Ilha claim, Taquaral, Itinga, Minas Gerais, Brazil
Fluorite, Quartz, Opal-AN
Erongo Mountains, Karibib Constituency, Erongo Region, Namibia
Fluorite, Quartz, Opal-AN
Erongo Mountains, Karibib Constituency, Erongo Region, Namibia
Fluorite, Quartz, Opal-AN
Erongo Mountains, Karibib Constituency, Erongo Region, Namibia
Fluorite, Quartz, Opal-AN
Erongo Mountains, Karibib Constituency, Erongo Region, Namibia
Hyalite, Schorl, Smoky Quartz
Erongo Mountains, Karibib Constituency, Erongo Region, Namibia
Opal-AN, Smoky Quartz, Feldspar Group
Uruguay
Opal-AN, Smoky Quartz, Feldspar Group
Uruguay
Opal-AN, Smoky Quartz, Feldspar Group
Uruguay
Opal-AN, Smoky Quartz, Feldspar Group
Uruguay
Smoky Quartz, Opal-AN, Schorl
Erongo Mountains, Karibib Constituency, Erongo Region, Namibia
Smoky Quartz, Opal-AN, Schorl
Erongo Mountains, Karibib Constituency, Erongo Region, Namibia
Spessartine, Quartz, Opal-AN
Wushan Spessartine Mine, Tongbei, Yunxiao Co., Zhangzhou, Fujian, China
Opal-AN, Spessartine, Quartz
Wushan Spessartine Mine, Tongbei, Yunxiao Co., Zhangzhou, Fujian, China
Opal-AN, Spessartine, Quartz
Wushan Spessartine Mine, Tongbei, Yunxiao Co., Zhangzhou, Fujian, China
Scapolite, Quartz, Epidote
Stony Creek Quarry, Branford, New Haven County, Connecticut, USA
Opal-AN, Albite, Quartz
U. S. Route 7 Expressway, Brookfield, Fairfield County, Connecticut, USA
Opal-AN, Quartz
Seula mine, Mount Camoscio, Oltrefiume, Baveno, Verbano-Cusio-Ossola Province, Piedmont, Italy
Opal-AN, Quartz
Seula mine, Mount Camoscio, Oltrefiume, Baveno, Verbano-Cusio-Ossola Province, Piedmont, Italy
Opal-AN, Quartz
Seula mine, Mount Camoscio, Oltrefiume, Baveno, Verbano-Cusio-Ossola Province, Piedmont, Italy
Opal-AN, Quartz, Albite
Seula mine, Mount Camoscio, Oltrefiume, Baveno, Verbano-Cusio-Ossola Province, Piedmont, Italy
Quartz, Opal-AN
Seula mine, Mount Camoscio, Oltrefiume, Baveno, Verbano-Cusio-Ossola Province, Piedmont, Italy
Schorl, Opal-AN, Smoky Quartz
Erongo Mountains, Karibib Constituency, Erongo Region, Namibia
Schorl, Opal-AN, Smoky Quartz
Erongo Mountains, Karibib Constituency, Erongo Region, Namibia
Opal-AN, Quartz
Girard, Girard District, Burke County, Georgia, USA
Plumbotsumite, Plumbophyllite, Opal-AN
C-Site, Blue Bell Mine, Zzyzx, Soda Mountains, Silver Lake Mining District, San Bernardino County, California, USA
Opal-AN, Chalcedony
San Luis Potosí, Mexico
Opal-AN, Chalcedony
San Luis Potosí, Mexico
Hyalite, Amethyst
Mammoth Mining District, Pinal County, Arizona, USA
Hyalite, Amethyst, Hematite
Mammoth Mining District, Pinal County, Arizona, USA