The Jeweller's Directory of Gemstones: A Complete Guide to Appraising and Using Precious Stones, from Cut and Colour to Shape and Settings

A good gemstone reference from a jewlers perspective. Includes all major geological groups but details what to look for. How they are forged or enhanced. How to work with them, settings and the like. Good all-rounder.

Very happy with my purchase.

Tells you what you need to know when dealing with gems