The book Gemmes, a collective work of the AFG (Association Française de Gemmologie), is a great tool for professional gemmologists, as well as for aspiring gemmologists. 190 gems are presented in the form of charts: physical and optical properties, group and crystal system, origins, possible confusions, colour spectrums of significant elements; essential information to proceed with the identification of gems.
This book is published in French.
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