Gem FAQS > Corundum (3 entries)
Ruby and Sapphire
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Ruby is considered the queen of gemstones and has been coveted throughout the ages by every culture. The name ruby comes from the Latin word rubeus which means red. ...
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Sapphires come every color of the rainbow except for red in which case they are called ruby. The section deals with blue sapphires. Sapphire is a corundum (Al2O3) and ...
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