Onyx Value, Price, and Jewelry Information
For millennia, artisans have carved intricate cameos from black-and-white onyx. Solid black onyxes, faceted or cabbed, are also popular jewelry…
Identifying Jade Treatments
Jade is one of the most popular and expensive gemstones. It can also receive many enhancements. Learn about jade treatments and how to identify…
Peridot Buying Guide
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.…
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…
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.
Hybrid Gemstones: Glass Rubies and More
Some gems contain both natural and lab-made components. Learn about these hybrid gemstones and how to distinguish them from mined gems.
May Birthstone: Emerald
What is the Birthstone for May? The birthstone representing May is emerald, a rich green variety of the diverse beryl gem group which must exhibit…
32 Green Gemstones (How Many Do You Know?)
A favorite color for nature-inspired designs, green gemstones never go out of style. Learn which of these 32 green gems hold up best for engagement…
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