A private collection of opals is slowly making its way around the world being shown privately to collectors. The hoard consists of 12 uncut, untreated black opals of varying shapes and sizes acquired ...
The opal, dubbed the “Americus Australis,” weighs more than 11,800 carats and is one of the largest gem-quality opals in existence. (Dana Fuentes/Alaska Premier Auctions) A gemstone, billed as one of ...
A gemstone, billed as one of the largest gem-quality opals in existence, was sold for $143,750 at auction in Alaska on Sunday. The opal, dubbed the “Americus Australis,” weighs more than 11,800 carats ...
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