Uncut gem teaches not to be greedy - New opal cutting machine! (Cabking)
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Large slab uncut gem rough - Cut and polished it for a top black opal
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The rollercoaster of a high-risk rough opal piece
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Solar Powered Opal Mining Leads To Rare Petrified/Opalized Wood Find!
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Mastering the Art of Cutting Thin Bars of Opal: A Comprehensive Tutorial
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MOJ stone 245-Something new! *bs edition
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The Most Unique Opal Mining Discoveries In Australia! | Outback Opal Hunters
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A gambler? A gem cutter or a educated risk
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