7.69 CTS Synthetic Opal Cushion Cabochon Pair 12x12 mm Loose Gemstones. Synthetic Opal Pear Cabochon Pair 22x15 mm 13.33 CTS Loose Gemstones. Synthetic Opal Round Cabochon Pair 15 mm 10.31 CTS Loose Gemstones.
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