Tag: black boulder opal

Unset Boulder Opal

Unset Boulder Opal This quality unset boulder opal comes from the Western Queensland fields. Stones like this are becoming rarer as the opal fields are running out. The price of the stone, unlike many gemstones, is influenced by supply and demand, not by international cartels who agree on price increases. Size: 37×21 mm (approx 1 1/2″ […]

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