Gems of the world
By: Cally Oldershaw
Edition: Revised and updated.
Published: 2017
Language: eng
Number of pages: 256
ISBN-13: 9780228100072
Subjects: Precious stones; Identification
Description: "Guide to the identification and properties of precious and semiprecious gems, novelty stones, agates and crystals. Includes the geology, chemistry of gemstones, what to look for when buying gems and how to care for them, plus information on the diamond industry."--
Notes: Previous edition: 2008.

Includes index.