Corundum Use as a Gemstone Abrasive Refractory Geology

Corundum 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 Geology Store Hammers field bags hand lenses maps books hardness picks gold

What is corundum and what are its basic qualities UBC EOAS

A high density of 4 0 g cm3 most silicate minerals are 2 6 g cm3 results in corundum occurring in secondary placer deposits and recoverable by panning

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Corundum Wikipedia

Corundum is a crystalline form of aluminium oxide Al 2O 3 typically containing traces of iron titanium vanadium and chromium It is a rock forming mineral

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