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Corundum

$6.00

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This listing is for the exact specimen you will be receiving. 

Measures approximately one inch long.

FURTHER INFORMATION:

Corundum, or sapphire, is a precious gemstone, consisting of aluminum oxide (α-Al2O3) with trace amounts of elements such as iron, titanium, chromium, vanadium, or magnesium. Because of the remarkable hardness of corundum – 9 on the Mohs scale (the third hardest mineral, after diamond at 10 and moissanite at 9.5) – corundum is also used in some non-ornamental applications, such as infrared optical components, high-durability windows, wristwatch crystals and movement bearings, and very thin electronic wafers, which are used as the insulating substrates of special-purpose solid-state electronics such as integrated circuits and GaN-based blue LEDs.

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Corundum

Corundum

$6.00
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