Distinguishing a diamond look-alike from the real thing can be challenging. Learn how to use specific gravity and birefringence to make simple separations.
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.
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 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.
Finding good diamond rough and the right equipment can be challenging for a non-professional diamond cutter. Learn what to look for here.
Diamonds may form under intense heat and pressure, but under certain conditions, diamonds burn. Learn the science behind a diamond's fiery end.
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.
A classic chameleon diamond can change color from green to yellow under certain conditions. Learn more about this process and other color change diamonds.
Many factors contribute to gemstone brightness. Learn the role a gem's refractive index plays and the difference between gemology theory and practice.
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.