Information to help make shoppers aware of simulated stones and of diamonds that might have received undisclosed treatments to improve their appearance.
Provides a description of traditional jewelry metals, diamonds, and pearls, and includes advice to help consumers make decisions when buying and repairing jewelry.
Photos of gemstones, each accompanied by a description of the gem's properties and where it is commonly found. Includes instructions for close-up gem photography.
A reference library covering natural gemstones and minerals, synthetic and treated gems. Also offers resources for people who would like to pursue a career in gemology.
A nonprofit organization that offers gemstone identification and buying advice to consumers and training to those in the jewelry trade. The GIA provides lab services to the jewelry industry.
