Gem Identification Made Easy

By Antoinette L Matlins & A C Bonanno
Gemstone Press
1994/1989 ISBN 0-943763-03-7

Gemstone Press writes:

Today, knowing your gems, being absolutely sure about what you are buying and selling, is essential. Major changes in the gem world—new synthetic stones, new treatments to enhance and conceal, new gems, and more stones available in every hue and tone of color—make accurate gem identification more important than ever to both buyers and sellers.

Whether you are the owner of a large retail jewelry chain or small family-run business, someone who enjoys collecting or acquiring gems for personal pleasure, or a serious investor, insufficient knowledge can be costly. It can result in a bad purchase, damage to a reputation, and, equally significant, failure to recognize an opportunity.

With minimal effort and a nominal investment in several instruments, almost anyone can venture into the world of gemology and begin to experience the thrill and fun of discovery—learning just what a particular stone really is. You can learn to separate real from imitation, one look-alike from another, dyed from natural, and so on. Sometimes just a basic knowledge of how to use a simple instrument is all that is needed to avoid an expensive mistake or recognize a profitable opportunity.

Contrary to what many people believe, it isn’t necessary to spend $100000 (or more) for elaborate gem testing equipment. For less than $200, one can begin with just three pocket instruments: the loupe, Chelsea filter, and dichroscope. Use together, these three simple, portable instruments can enable one to identify almost 85% of the colored gemstone materials encountered today as well as diamonds and most diamond look-alikes. Once you have mastered these three, you can add other instruments to help you identify the remaining gemstone material and confirm identification made with pocket instruments.

While any one of these instruments alone is unusually insufficient to make a conclusive identification, a combination of two or more will usually be enough to tell you what you really have. The key, of course, is knowing how to use them and what to look for. That’s how Gem Identification Made Easy will help you. While years of training and experience are necessary to become qualified as a professional gemologist, with practice and a little hands-on work, you will find it takes surprisingly little time before you will feel more confident about what you are buying and selling.