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What Is The Difference Between Chert, Flint, And Mozarkite?

Flint and mozarkite are types of chert. While flint is known for its practical use, mozarkite is a colorful variety of chert that can be made into jewelry.

An Introduction To Turkey’s Gemstones

Turkey's gemstones include well-known species such as diaspore, chalcedony, and jade, as well as unusual specimens of lesser-known gems. Learn more here.

Choosing And Applying Doublet Glue For Jewelry

What's the best doublet glue for creating assembled stone jewelry? Learn about the choices as well as tips for making the bond between gemstones stick.

How To Make A Quartz Wedge For Polariscope Testing

A quartz wedge can be used with a polariscope to help a gemologist distinguish the + or – optic sign of a gem. Learn how to make and use one.

Where Can You Find Agate Stones Forming?

Agate stones typically form slowly in the cavities of ancient hardened lava flows. Learn where you can see this process occurring today.

Does Refractive Index Affect Gemstone Brightness?

Many factors contribute to gemstone brightness. Learn the role a gem's refractive index plays and the difference between gemology theory and practice.

Facet Designs For Beginners

What are the best facet designs for novice gem cutters? Find recommendations for cutting styles, books, resources, and gemstone rough here.

Gemstone Colors And Identification

Did you know most gem species can be distinguished without the element of color? Learn the role gemstone colors play in gem identification.

Star Gemstones: Tips For Beginners

Want to start cutting beautiful star gemstones? Here are some helpful gemological resources for novice lapidaries and jewelers.

Why are Topaz and Citrine Gemstones Misidentified?

Learn why citrine gemstones are sometimes misidentified as topaz. A professional appraisal by an independent gem lab is the best way to identify your gems.