Corundum
Corundum is a crystalline form of aluminium oxide with traces of iron, titanium and chromium. It is a rock-forming mineral. It is one of the naturally transparent materials, but can have different colours when impurities are present. Transparent specimens are used as gems.
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Corundum
(May differ to photo) Sale! £2.47SIZE: 5-15mm (Range)
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Corundum
(Actual as seen) Sale! £3.91SIZE: 12 x 7 x 7mm
(0.47 x 0.28 x 0.28 inches) -
Corundum var. Ruby, (Rare)
(Actual as seen) Sale! £29.70SIZE: 45 x 44 x 23mm
(1.77 x 1.73 x 0.91 inches)
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