Smithsonite Value, Price, and Jewelry Information
Smithsonite occurs across the globe, but facetable crystals are extremely rare. These gems can show a wide range range of rich colors but are too…
A Consumer’s Guide to Gem Grading
Learn how gemologists evaluate color, clarity, cut, and carat for gem grading. Consumers can use this information to find the right stone for their…
Disclosing Enhancements: A Gemologist’s Guide
Disclosing enhancements to gems is a key duty for gemologists. Learn what are the hardest treatments to detect and how to report your findings clearly.…
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…
Covellite Value, Price, and Jewelry Information
Although covellite has attractive blue colors and shows iridescence, this rare mineral is difficult to cut. You can scratch it with a fingernail!…
Grading Gem Carvings
Gem carvings are judged on material, workmanship, and artistry. Learn how to apply these criteria to a piece with our step-by-step guide.
June Birthstone: Pearl
Discover everything about the June birthstone pearl – from its unique organic formation and stunning color varieties to its cultural meaning…
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