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Rare 28.4ct Polished Double Sided Koroit Boulder Opal “Nut” Crystal Cabochon - Australia - Item:O18017
Koroit Opal “Nut” with phenomenal color within the veins!!
Incredible color shifting throughout the entire specimen which appears similar to lightning!
Weight: 28.4 carats (5.69 grams)
Dimensions: 1.1” (27x21x5 mm)
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