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How To Cut Gemstones - Sapphire
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Basic "How to" Tutorial on Cutting and Polishing a Gemstone Cabochon
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How to Shape & Polish Corundum - JOOLTOOL
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Tim's Adventures💎How to cab a sapphire💎Sapphire💎⛏️ Ep. 617
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Polishing Star Sapphire
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all about corundum! ruby & sapphire geology, metaphysical properties & fakes
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