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NATURAL SOLID LIGHTNING RIDGE AUSTRALIAN BLACK OPAL 2.67 carats (16027) | eBay
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Why Black Opal Is One of the Most Expensive Gemstones in the World
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2 Translucent Australian Crystal Opal Solid Cut Stones 1.7ct
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12.54ct Australian White Crystal Opal Platinum Ring | Burton's – Burton's Gems and Opals
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