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 world's largest online auction website for natural Opals is scheduled to hold a rarities auction, set for May 4th at 6:30pm PDT, with live broadcast on YouTube and Periscope. The Rarities Auction ...
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