The Geology of.Rubies | DiscoverMagazineNov 25, 2004 . Rubies are a type of corundum, a rare mineral made up of densely packed .. a lot of the deposits, even though the details tend to be different.meri corundum ruby crusher detailed,Ruby & Sapphire Heat TreatmentMar 7, 2013 . History of the high temperature heat treatment of sapphire and ruby, . or Papyrus Graecus Holmiensis, details methods of counterfeiting and treating gems. . People take pebbles from the earth and crush and compress them into . The above are but a few of the historical mentions of corundum treatments.Corundum: The mineral Corundum, Sapphire, Ruby info & picturesDetailed description, properties, and locality information guide about the mineral corundum: ruby and sapphire.
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