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D2459 - 225cts Raw Boulder Opal Gemstone Purple Fire,Rare Australian Opal
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30 Pretty Australian Opal Triplets 7x5mm
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5.65ct Australian Black Opal Gemstone To Cherish & Admire Forever
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Australian Opals: An Introduction - International Gem Society
Blue/Green Oval Black Australian Opal – 1.07ct – The Opal Man
6.0 ct. Black Opal Large Natural Australian opal , Very sparkly pattern | eBay
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Know About Opal Gemstone from Australian Opal Direct
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A Guide To Australian Opal Doublets by ILLARIY Jewellery
Australian Opals: An Introduction - International Gem Society
Blue/Green Oval Australian Opal Doublet Matched Set – 1.58ct – The Opal Man
