Home, Consumer Information, Jewelry and Gemstones - Idazzle.com. Provides basic information to help familiarize buyers with the qualities they should look for when searching for a diamond.
Home, Consumer Information, Jewelry and Gemstones - Gemological Institute of America (GIA). A nonprofit organization that offers gemstone identification and buying advice to consumers and training to those in the jewelry trade.
Home, Consumer Information, Jewelry and Gemstones - American Gem Trade Association. The Natural Colored Gemstone and Cultured Pearl Source of Information and Ideas.