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species: corundum
variety: blue sapphire
weight: 0.74 ct
measurements: 3.8 x 7.2 mm
origins: Sri Lanka
natural
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The word corundum is attributed to the origin of the ancient Sanskrit "kuruvinda" which means "very hard stone". Corundum crystallizes in the trigonal system, its crystalline habit is prismatic or bipyramidal. This is an allochromatic mineral, that is, if it is found pure, it is colorless. Its chemical composition derives from aluminum oxides (Al2O3)
Sapphire, whose name derives from the Greek "sappheiros" meaning blue. In this case the color is due to iron-titanium charge transfers.
