Ruby & Sapphire A Gemologist’s Guide

Posted on January 2, 2017 by Reviewed by Stuart M. Robertson, GG (GIA)

By Richard W. Hughes with Wimon Manorotkul & E. Billie Hughes RWH Publishing/Lotus Publishing 1st edition, 1st printing. Printed in Thailand. ISBN 978-0-9645097-1-9 707 pages Ruby & Sapphire A Gemologist’s Guide is the much-awaited work of famed gemologist…

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