Deutsch

Der diamant : seine Eigenschaften und seine Bearbeitung

German translation of the Flemish, Diamant, zijne eigenschappen en zijne bewerking, 1906. "Describes the properties of diamonds and diamond crystals, with almost all of the text devoted to the steps that must be taken to process the diamond from its rough form into a finished gem. There are specific instructions for cutting several common styles of cut. At the time this was the only useful instructional manual available to diamond cutter apprentices in Europe."-​-​Gemology by J. Sinkankas, entry no. 6857 (this German edition JSL entry no. 6861).

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