Tables of Gemstone Identification by Ivo QUINTENS (Author), Roger DEDEYNE (Author) Books with constant control given by

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Tables of Gemstone Identification by Ivo QUINTENS (Author), Roger DEDEYNE (Author) Books with constant control given byThe most actual and updated tables for the determination of gemstones. This book contains 8 different tables that should lead the user to a fasterand correct determination of transparant gemstones as well as opaqueornamental stones This book is a must for every gemmologist.