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 Date: 2012-01-04 09:51:25Matter Sapphire Ruby Tairus Verneuil process Corundum Gemology Geuda Inclusion Gemstones Chemistry Crystallography |
| Robert Genis The Gemstone Forecaster NGC, P. O. Box 42468, Tucson, AZ, [removed]6453DocID: 8wpU - View Document |
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