How it Works: Recutting Gems to Maximize Value
Recutting gems that have been poorly cut can increase their value significantly. See how precision custom cutting can transform a gem.
Recutting gems that have been poorly cut can increase their value significantly. See how precision custom cutting can transform a gem.
Novice gem faceters often have questions about dopping with wax. Learn what types of dopping wax to use and how to get started.
Emeralds from different sources can vary in quality. Learn how to identify emerald origins by analyzing the optical and physical properties of…
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.…
You can use a polariscope to observe gemstone twinning, dichroism, and crystal strain. Test your ability to identify these and other gem properties…
The polariscope is an essential tool for gem identification. Learn how it works, how to use it, and how to test gemstone refraction.
Gem formation usually involves mineral crystallization and other geological processes. Learn how these affect the gemstone properties gemologists…
One of the rarest of all facetable gems, cut cuprites can show magnificent deep red color. However, these beautiful stones are too fragile for most…
Distinguishing diamonds from their lookalikes requires educated eyes. Learn what visual features to look for and the properties of many popular…