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Gem Testing - Anderson, B
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This vintage book contains a complete guide to testing gems and gemstones for purity and authenticity. Complete with a plethora of useful illustrations and all the information a prospective or existing enthusiast might need to know about the subject, this book constitutes an ideal resource for anyone with an interest in lapidary and gem testing. The chapters of this volume include: "How to Use this Book", "Refractive Index and its Measurements", "Double Refraction and How to Detect It", "Colour, Colour Filters and ...

Gem Testing 2010, Sutton Press, Alcester

ISBN-13: 9781445512426

Trade paperback

Gem Testing 2010, Sutton Press, Alcester

ISBN-13: 9781445516264


Gem Testing 1990, Butterworth-Heinemann, London, England

ISBN-13: 9780408023207

10th edition


Gem Testing 1980, Butterworth-Heinemann

ISBN-13: 9780408004404

9th edition

Unknown binding

Gem Testing 1971, Newnes-Butterworth

ISBN-13: 9780408701273

8th Revised edition