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Emerald and other beryls
Résumé :
From the dust jacket: "This consummate portrait of Emerald and Other Beryls is a permanent reference for jewellers, gemological historians, mineralogists, geologists, and mineral collectors. John Sinkankas, a widely respected authority on the earth sciences, here provides a scholarly yet eminently readable monograph on every facet of beryl: cultural and natural history; structure and composition; lapidary and synthesis; and world occurrences, including gems, collect... >Voir plus