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Corundum - Wikipedia
Learn About Sapphire Corundum Crystals & Chemistry
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Corundum: Mineral information, data and localities.
Blue Corundum Mineral Form Tanzania. Corundum is Gem Varieties, Ruby and Sapphire. Stock Image - Image of iron, mineral: 211828395
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Corundum: Mineral information, data and localities.
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Corundum var. Sapphire with Calcite - LB-545 - Gwebin - Mandalay Region Mineral Specimen
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Sapphire (corundum) | Blue corundum (sapphire) (~5.0 centime… | Flickr
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Corundum: The mineral Corundum, Sapphire, Ruby info & pictures
Corundum Value, Price, and Jewelry Information
