Opal

Phenomenal gems seem to do magical things with light. Learn the science behind optical effects like cat’s eyes and star stones and how to judge…

Gem species are mineral species prized for their durability and beauty. Learn how chemical formulas and crystal structures define species and…

Aquamarines can look great, but what’s the best way to mount them? Novice jewelers should learn the pros and cons of various aquamarine setting…

Learn the best techniques and tools for cutting rough stones. Making small pieces from big pieces is one of the most basic procedures in the lapidary…

Cabochon cutting or cabbing is the most popular form of gem cutting. With practice, you can master this skill. Read on to learn more about this technique.…

Learn the basic procedures of gemstone faceting. This walkthrough for a standard round brilliant cut gem includes cutting instructions and pics.…

Ask anyone which mineral is the hardest and they’ll most likely tell you a diamond. In fact, diamonds are so hard they’re used in all kinds of…

Complete amber buying guide covering quality factors, treatments, and jewelry considerations. Learn to identify genuine amber and avoid imitations…

Amber is the hardened resin of ancient pine trees. This organic substance is most well-known for the incredible inclusions of insects that can…