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…
Color Filters: Uses and Limitations for Gemology
A set of color filters can be helpful in the field and in the lab. Learn the limitations and uses of color filters for gemology.
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.
Carving an Arizona Black Jade Pendant
What is Arizona black jade? Learn about this unusual opaque black gem material and follow this pendant carving demonstration by a master carver.…
June Birthstone: Pearl
Discover everything about the June birthstone pearl – from its unique organic formation and stunning color varieties to its cultural meaning…
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: From Everyday Durability to Collector’s Rarities
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…
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.…
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