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Gemstones

Autor Keith Wallis
en Limba Engleză Hardback – 13 ian 2016
A guide to understanding, identifying and buying gemstones as collectables. Colour illustrated throughout.
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Specificații

ISBN-13: 9781851496303
ISBN-10: 1851496300
Pagini: 160
Dimensiuni: 220 x 226 x 20 mm
Greutate: 0.84 kg
Ediția:2nd edition
Editura: ACC Art Books

Descriere

As well as diamonds, emeralds, rubies and sapphires, over 100 gems are featured, with full descriptions, technical details, and tips on how to check for fakes; illustrated throughout with fabulous color photographs to make identification easier. Technical terms such as refraction and fluorescence are explained and some basic identification tests are introduced. A helpful tour around the world details where gems are best available. Informative appendices include a glossary of terms, tables of specific gravity and refractive index, and the comparative value of different stones. The clear, uncomplicated presentation makes this book a must for anyone interested in gemstones, whether as an investment or simply as a hobby.