Sapphire is a variety of the mineral Corundum it is the same material as Ruby, consisting of aluminum oxide with trace amounts of elements such as iron, titanium, cobalt, lead, chromium, vanadium, magnesium, boron, and silicon it has a hardness of 9 on the Mohs scale. It has a Refractive Index of 1.76 – 1.77. This beautiful piece of Sapphire from The Umba River in Tanzania weighs 6.77 cts and measures 13x8x7mm and has some viels.
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We will be exhibiting at the 2025 West Coast Gem Show May 2nd - 4th. The show will be located at the Holiday Inn Orange County Airport, 2726 S. Grand Ave. Santa Ana, CA 92705. We will be in rooms 143 & 145, we hope to see you all there! Shipping out orders may take longer than usual during the show dates.
SKU: UMSA#1
$2,500.00 Regular Price
$750.00Sale Price
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