Blue Sapphire is the English name for the Neelam gemstone. It is a valuable stone with a blue hue that is a member of the Corundum mineral family. Al2O3, or aluminum oxide, is the chemical formula used to make sapphires. ...
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Blue Sapphire is the English name for the Neelam gemstone. It is a valuable stone with a blue hue that is a member of the Corundum mineral family. Al2O3, or aluminum oxide, is the chemical formula used to make sapphires. ...