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Ruby is a pink to blood red gemstone, a variety of the mineral corundum (aluminium oxide). The mineral family of Corundum also contains Sapphire, there is a lot of debate as to where the line between Pink sapphire and Ruby lies. Ultimately it comes down to personal interpretation. The Ruby is a hard gem which is rated 9 on the mohs hardness scale, and is just below diamond, which is 10 and talc is 1. A 16 carat Ruby that sold at Sotheby's in New York in October 1988 fetched a US$3,630,000. Rubies are one of the world's most expensive gems, but like all gems, quality determines price.

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16y ago

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