Corundum: Mineral information, data and localities. - MindatRichard Kirwan used the current spelling "corundum" in 1794. Known by many names in ancient times: adamant, sapphire, ruby, hyacinthos, asteria, etc.jalan masuk corundum crusher,Corundum: Use as a Gemstone, Abrasive, Refractory - GeologyCorundum is used as a gemstone, abrasive, refractory and much more. Red corundum is a ruby, blue is a sapphire, any other color is a fancy sapphire. Synthetic.Corundum | mineral | BritannicaJan 9, 2019 . Corundum, naturally occurring aluminum oxide mineral (Al2O3) that is, after diamond, the hardest known natural substance. Its finer varieties.
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