lapis lazuli

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

Some gems contain both natural and lab-made components. Learn about these hybrid gemstones and how to distinguish them from mined gems.

Gemologists use the hot point test to determine if a piece is a plastic imitation or coated in wax. Learn more about this destructive test here.

Emerald crystals can grow very large. Learn about some of the world’s largest emeralds, whether rough, faceted, or carved.

Discover December birthstones: blue topaz, blue zircon, tanzanite, and turquoise. Explore their meanings, origins, and jewelry options in…

We live in a world of crystals. Learn what they are and where you can find them, from deep underground to the dust in the air and even inside our bodies.…

Learn how to determine a gem’s optic character with a refractometer and identify optical effects you may encounter during gem identification…

Commentaries on the foundation stones of the Book of Revelation influenced the development of the Western birthstone system. Learn more about…

Golden beryl, also known as heliodor, can display rich colors and is an excellent gem choice for jewelry. Learn more about this golden relative…