Chapter 3 elaborates on the physics of corundum, including parting, fracture, hardness, and thermal properties. Crystal forms, angles, twinning, shapes, and other habits are documented and described. The trace-element chemistry of ruby and sapphire from different localities are detailed in a chart by contributor Kenneth Scarratt. The following chapters explore the sciences, beginning with the chemistry and crystallography of corundum in chapter 2. This chapter also introduces several antique jewels referenced in the “Ruby & Sapphire in the Ancient World” section written by Lisbet Thoresen. The reader will travel in this chapter from ancient civilizations through the Middle East and Europe of the Middle Ages and other eras.
The book starts with a fascinating chapter reviewing the legends surrounding corundum throughout history. From the very first pages, Ruby & Sapphire transports the reader on a fantastic journey. All the chapters have a beautiful new layout and are artistically designed with colored charts and diagrams, spectacular new photography, and extensive documentation. Billie Hughes offers exciting new features, including work by new contributors, updates within the text, and comprehensive analytical data. Hughes with coauthors Wimon Monorotkul and E. Ruby & Sapphire: A Gemologist’s Guide is the updated version of the 1997 classic of this same name. by RWH Publishing/Lotus Publishing, Bangkok, 2017, US$200.00. Billie Hughes, hardcover, 816 pp., illus., publ.
Comprehensive CAD/CAM For Jewelry Certificateīy Richard W.
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