Synthetic corundum being a tanzanite.?

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IzzudeenA61502Pro Member

9m

Emm hi… I ve come across a so Called tanzanite weighing about 16 carat… He bought it 10 years ago for about USD1200… He asked me to test… I got the Refractive index of 1.756-1.762… The Specific gravity was 4.006… It is not glass on Polariscope… I believe that this is a synthetic corundum… But can tanzanites have that RI and SG.?

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Based on your RI and SG readings, I agree with your corundum conclusion. Well done!

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