Gemology
Science, tools, identification, treatment, valuation & grading of gems.
Science, tools, identification, treatment, valuation & grading of gems.
Cutting and faceting stones, jewelry settings, metals, tools and techniques.
Detailed information for any gemstone you are interested in.
The IGS Gem Price Guide covers many popular as well as unusual, collectible gems. Find your gem’s retail value based on its type, size, and qualities.