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Black Opal is Australia’s national gemstone, and black opal is the rarest and most valuable of its kind

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Firey opal stone[ cm52 ] 2.73 cts

Black Opal 3 carats Auction Opal Auctions

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Black Opal stone 3.70 cts- beautiful to me because it looks as though there are galaxies inside.

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Solid Gem Black Opal- How can something so minute in the grand scheme of things resemble something as large as the universe??

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Australian Black Opal—"The Stardust Opal". T-Bones Mine, Corcoran, New South Wales, Australia

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2.75 cts flashy black opal - lightning ridge- [so7155]

Black Opal Stones 15 x 11 x 3mm 2.75 carats Auction #593688 Opal Auctions

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Black Opal | Blue Harlequin pattern | Lightning Ridge, Australia ~ this is incredibly beautiful <3

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opals australia | UNIQUE OPALS - Australian Black Opals and Opal Jewelry

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Firey black opal [ cm102 ] 2.51 cts

BLACK OPAL [ CM102 ] 2.51 CTS

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Lightning Ridge black opal. http://www.flickr.com/photos/woodsstoneworksandphotofactory/2412732142/in/photostream/

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