20 Dec 2006 ... Ruby, the gemstone, is the red variety of the mineral corundum. Corundum is crystalline aluminum oxide (alumina). Ruby's red color comes ... www.ccmr.cornell.edu |
This jeweler has always sold our family authentic rings, gold, .... As far as I know ( and I am no expert), synthetic Ruby comes in 3 types. www.gemologyonline.com |
There is probably no way for the average person to know absolutely that a ruby is real, but if the gem scratches glass, and is red, and sold from a reputable ... wiki.answers.com |