(via The Canadian Gemmologist, Vol.III, No.3, Spring 1982) In my pure form I am white, but you seldom see me that way except as a synthetic. Usually I have color, and that color varies considerably. Sometimes I fluoresce brightly, sometimes not. I don’t have a very high dispersion, so people buy me primarily for my color. I have a good luster, I am durable, and my specific gravity is higher than most run-of-the-mill gems. What am I?
Answer: Corundum
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