Details:
This is a parcel of 9 heated Montana sapphires totaling 16.9 ctw, and ranging from 0.8-2.5 cts individually. These stones all come from our older stock of material. The colors are all open, and range from a nice steel-blue to steel-blue-green. For distribution of sizes please see the figure that lays them out with their weights noted for each. They’re all cutters, with only 1 (the 0.8) being of a thinner proportion.
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Mineral: Corundum
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Chemical composition: Al2O3
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Color: Steel blue to Steel blue-green
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Refractive index: 1.762-1.770
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Mohs hardness: 9.0
