Thursday, July 31, 2014

Corundum: Use as a Gemstone, Abrasive, Refractory

Who doesn't like Rubies and Saphires? Beyond the superficial impact of these gems on our lives, the industrial uses of Corundum are quite amazing as well. Learn a little more thanks to Geology.com.  Corundum: Use as a Gemstone, Abrasive, Refractory

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