Though both stones are varieties of Corundum, in nature, Rubies are rarer than Sapphires. Both gems form under high temperature and pressure when fluid produced by magma interacts with silica and other rocks within the earth’s crust. Corundum’s crystal structure is hexagonal and though Ruby...
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Tag: Gems
Welcome to GemCrowd! I’m Helen Driggs, the Editor here at GemCrowd and I am pleased to announce our new daily blog! As we build the community, I invite you to visit the GemCrowd Blog every weekday, because each day of the week will focus on...