The ‘Ruby Dragon’, Ruby (red corundum) from Madagascar. Chinese mineral dealer. ShangHai rock shop.

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What is a corundum?

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Corundum from Kotlyar's Auction

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Minerals : Oxides - Corundum

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Blue Sapphire Corundum from CAMBODIA

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Crystal \u0026 Mineral Education: CORUNDUM (Ruby / Sapphire) ♦️🔷

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Gemology: Corundum 1

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Geology of Ruby!!! #ruby #corundum #geology #minerals #crystals

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Corundum from Madagascar (bai65)

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looks like corundum by shape but it's full of holes and is really heavy it contains metal to.

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Extremely rare 3 type inclusion in one corundum crystal,$450 shipped 🙏 🙏 🙏

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Orange Sapphire # Top Goldilas Yellow colour Precious Corundum from my gem collection.

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Speaking of stones. Corundum family Gemstones.

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Natural corundum from Burma

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Brown sapphire corundum from Sri Lanka 180ct

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Mineral Spotlight - Corundum (Ruby)

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Rough lot of Corundum from Afghanistan.

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Natural Rough White Sapphire (Corundum) From Tanzania Africa. Nice Hexagon

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Corundum: Use as a Gemstone : Value, Price, and Jewelry Information

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Corundum from Tanzania

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