How to Build Pocket Crossed Filters for Gemstone Testing
The crossed filters technique allows gemologists to detect chromium in gems. Learn how to build a portable device for conducting this useful ID…
Benitoite Value, Price, and Jewelry Information
With dispersion higher than diamond and sapphire-blue body color, benitoite is one of the most attractive of all rare gems. Gem-quality crystals…
An Introduction to Gem Identification
Gem identification is part detective work, part art. Learn how gemologists can distinguish gem species and determine whether a stone is natural…
Faceting Equipment Essentials
What faceting equipment do novices need to learn to cut gems? Learn what faceting machines, laps, books, and supplies are most suitable for beginners.…
Gem Origin Opinions: When Gemology Labs Agree to Disagree on Sapphire Origins
Why do gemology labs sometimes have different gem origin opinions, especially for sapphires? Learn the science and history behind the debate.…
Gemstones That Make Money
What kinds of gems can novice faceters cut to make a profit? Learn which gemstones make money reliably and which ones have limited potential.
10X Loupe for Gemologists and Jewelers
The 10X loupe is the gemologist’s best friend. Learn how to examine gemstones for fractures, inclusions, color, and much more with this simple…
Should You Cut the Gem Pavilion First?
Experts might successfully cut gems crown first, but cutting pavilion first is usually the best and most practical method. Read this article to…
Gemstone Faceting Terms: A Glossary for Students
A glossary of frequently encountered gemstone faceting terms for the student gemologist. Our list covers gemology, gem cutting, and equipment.…
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