inclusions

Learn how gemologists evaluate color, clarity, cut, and carat for gem grading. Consumers can use this information to find the right stone for their…

What is Turkish purple jade? Learn about the qualities of this rare, beautiful, and versatile gemstone and see it transformed from rock to finished…

How does the GemEx iLoupe compare to a standard jeweler’s loupe? Our review tests the device and app, designed for smartphones and tablets.

Our peridot buying guide can help you learn how these gems are graded, what to avoid, and how to identify a high-quality stone or a bargain in the rough.…

With dispersion higher than diamond and sapphire-blue body color, benitoite is one of the most attractive of all rare gems. Gem-quality crystals…

Gem identification is part detective work, part art. Learn how gemologists can distinguish gem species and determine whether a stone is natural…

Learn how lab grown sapphires are made and how gemologists can distinguish natural from synthetic sapphires.

Although covellite has attractive blue colors and shows iridescence, this rare mineral is difficult to cut. You can scratch it with a fingernail!…

Gem carvings are judged on material, workmanship, and artistry. Learn how to apply these criteria to a piece with our step-by-step guide.