In this volume you will find a multitude of gems are studied as for example: iolita, emeralds from Zambia, opal boulder and mexican, runies of Mogok, some diamonds, fancy sapphires of sri Lanka, imperial topaz, amber, etc
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It is a book that is indispensable to differentiate the qualities of the gems.
Includes a multitude of tables with the gems photographed in high resolution to understand the theory of classifications.
With book binding, luxury the book has a hard cover and a cubreportadas outside for a better conservation. . Are more than 140 pages of high quality with a size of 32 x 23 cm
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