Provides a concise description of each gemstone, photographs showing characteristics and distinguishing features, and information on where gemstones are found a

This book gives you all the information you need to buy, collect, sell or simply enjoy sapphires, emeralds, rubies and other coloured gemstones with confidence

Since early 1989, a gem dealer I've known for years has been calling me every few weeks to brief me on mounting mayhem in Colombia's lucrative emerald market. T

Newly updated and expanded, COLORED GEMSTONES gives you all the information you need to buy, collect, sell— or simply enjoy—sapphires, emeralds, rubies and