HARDNESS: 9 on the Mohs scale (3rd hardest natural gemstone after moissanite and diamond)įORMATION: Sapphires are mined from alluvial deposits or from primary underground workings. ORIGIN: Significant sapphire deposits are found in Australia, Cambodia, Cameroon, Shandong, Colombia, Ethiopia, Kashmir, Kenya, Madagascar, Malawi, Mozambique, Burma, Nigeria, Sri Lanka, Tanzania, Thailand, Montana, and Vietnam.ĬHEMICAL COMPOSITION: Sapphire Stone has aluminum oxide (α-Al2O3) with minor amounts of components such as iron, titanium, chromium, vanadium, or magnesium.ĬUT : Step Cut, Brilliant Cut, Mixed Cut, and Cabochon Cut. Other materials contribute small amounts of impurities that impart color to the crystals.ĬOLOR: Natural White Sapphire is colourless and the purest form of Corundum Natural white sapphire is rare compared to colored sapphires because of their natural formation. White Sapphire Stone is a Corundum (aluminum oxide) family member.
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