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Logan Sapphire, National Museum of Natural History, Washington DC.jpg

Sapphire is a type of the mineral corundum, an aluminium oxide (Al2O3). Sapphires are the same as rubies, except that they are not red.

Sapphire can be found in the ground or it can be made in large crystal. Blue sapphires are the most famous kind, but they can be many different colors, like amber and orange.

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