Superb 41ct highly figurative Boulder Opal

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This exotic and large boulder opal displays a beautifully marbled matrix with pops of pure opal crystal. It has a natural high gloss luster, and measures 25mm x 24mm x 10mm! This is an untreated boulder opal, it contains pure opal and matrix. This gem was sourced from the Koroit opal fields in the Paroo shire of southwest Australia.
Maryland
United States