Diamonds are popular gemstones surrounded by popular misconceptions. We'll tell you how they became so prized and debunk some of those diamond myths, too.
Colorado has a lot to offer gemologists and rock hunters. Before you visit, learn about Colorado gemstones as well as notable gem shows, museums, and clubs.
How can you evaluate diamond symmetry without an expensive proportion scope? Learn how to build an inexpensive alternative tool that will get the job done.
Do you want to buy a diamond for an engagement ring? Don't. Still want to buy a diamond? OK. Here are the top three reasons not to buy a diamond online.
Gemstone luster describes how a gem's surface looks when it reflects light. Learn the common terms gemologists use for this property and what can affect it.
The FTC requires jewelers to accurately represent the diamond quality grading systems they use. Learn the guidelines and protect yourself from liability.
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.