Explains in non-technical terms how to use the SSEF Diamond-Type Spotter and SSEF Blue Diamond Tester to identify diamonds, and how to separate natural diamonds
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’
Newly updated and expanded, Diamonds gives you all the information you need to buy, collect, sell—or simply enjoy—diamonds with confidence and knowledge. Wh
Explains in non-technical terms how to use the refractometer to identify diamonds and colored gems, and how to separate natural gems from imitations, treated ge