Explains in non-technical terms how to use the ultraviolet lamp to identify diamonds and colored gems, and how to separate natural gems from imitations, treated

one person can accomplish big things.

This colorful book offers you a window into the world of Mahatma Gandhi, one of the most amazing people of the twentieth century. You will learn about Gandhi’

Explains in non-technical terms how to use the Chelsea filter and synthetic emerald filter to identify diamonds and colored gems, and how to separate natural ge

An easy-to-use book that shows how anyone can learn to identify most of the gems and synthetics found in the marketplace. This practical book is essential readi