ooooooooo!!!!!!!  Black opal

ooooooooo!!!!!!! Black opal

Koroit boulder opal

4.3ct Koroit Boulder Opal cabochon/Australian opal

Koroit boulder opal

Royal Peacock Opal Mine - Denio, Nevada

Royal Peacock Opal Mine - Denio, Nevada

top boulder opal cut by Bill Kasso #awesomeness http://www.ithacajewelbox.com/calendar

top boulder opal cut by Bill Kasso #awesomeness http://www.ithacajewelbox.com/calendar

Fire Opal / Mexico

Fire Opal / Mexico

Blue Topaz - Virgem da Lapa, Minas Gerais, Southwest Region, Brazil

Blue Topaz - Virgem da Lapa, Minas Gerais, Southwest Region, Brazil

Black Opal

Black Opal

Boulder Opal - Queensland, Australia

Boulder Opal - Queensland, Australia

Opal (G10520) from the National Gem Collection, Smithsonian National Museum of Natural History

Opal (G10520) from the National Gem Collection, Smithsonian National Museum of Natural History

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