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Journal of Gemmology Precious Braswell 8/1/19 Journal of Gemmology Precious Braswell 8/1/19 Pyrite and Chromite Inclusion Assemblage in Emerald Read More
Journal of Gemmology Precious Braswell 3/1/14 Journal of Gemmology Precious Braswell 3/1/14 A Comparison of R-line Photoluminescence of Emeralds from Different Origins Read More
World of Gems Conference Precious Braswell 12/1/08 World of Gems Conference Precious Braswell 12/1/08 Forensic Gemology: Geographic Origin Determinations Read More
Gems & Gemology Precious Braswell 12/1/89 Gems & Gemology Precious Braswell 12/1/89 Emerald and Gold Treasures of the Spanish Galleon Nuestra Señora de Atocha Read More