The Australian Opal Centre has confirmed the return of the Australian Opal Tour, with a nine-day cross-country grand journey ...
The Australian Opal Centre has announced the return of its nine-day Australian Opal Tour, visiting four opal-producing ...
A giant opal that weighs nearly 12,000 carats received a six-figure bid at an auction in Anchorage, Alaska. The precious stone, which is split in two, was sold for $143,750 on Sunday by Alaska Premier ...
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