Four Treasures Reference Database
Record No. 3139
Rubini e zaffiri: Inclusioni—Rubies and sapphires: Inclusions
Conference Paper
Gübelin, E.J. (1994) Rubini e zaffiri: Inclusioni—Rubies and sapphires: Inclusions. Gemmologia Europa: European Gemmologists on Rubies and Sapphires, Milan: CISGEM, pp.106–137.
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corundum, inclusions.5, gems