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These High Jewelry Pieces Owe Their Magic to “Animal Architecture”
For Monica Rich Kosann, whose high jewelry collection, The Jewels of Nature, uses rare Australian black and crystal opals and ...
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Why pearls, black opal, and chocolate diamonds are so expensive
Black opal is one of the rarest gemstones in the ... And the price of larger stones has risen by as much as 25 times. In 2000, jewelry company Le Vian capitalized on the underappreciated naturally ...