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gemstone dispersion - cerussite
What is Gemstone Dispersion?

Learn what gemstone dispersion means, what causes it, and how it relates to other optical effects of gems. Check out some amazing dispersion examples, too.

Master Diamond Cutter Mike Botha Takes On Esperanza

The Esperanza is the most valuable diamond ever mined in the US. Learn the story behind the find and the unique triolette cut designed to showcase this gem.

Carats and Gemstone Grading

Carats are the units used to measure gem weight and one of the main factors in gem grading. Learn what affects the value per carat of various gem species.

Diamond Rough and Equipment For The Occasional Diamond Cutter

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Can Diamonds Burn?

Diamonds may form under intense heat and pressure, but under certain conditions, diamonds burn.  Learn the science behind a diamond's fiery end.

Diamond Cutting for Hobbyists: Getting Started

With study, care, and the right tools, hobbyist gem cutters can add diamond cutting to their repertoire. Get started with these tips from expert cutters.

What Is A Chameleon Diamond?

A classic chameleon diamond can change color from green to yellow under certain conditions. Learn more about this process and other color change diamonds.

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.

Do Emeralds and Peridots Look Good Together?

Although emeralds and peridots are both green gems, differences in shade might make it hard to pair them in jewelry. Learn how to look for the right match.

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