Idazzle.com
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.
http://idazzle.com/
Gemological Institute of America (GIA)
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.
https://www.gia.edu/
askmrjewelry.com
Home, Consumer Information, Jewelry and Gemstones - Ask Mr. Jewelry. Photos and buying advice for diamonds and other gemstones.
https://www.askmrjewelry.com/
American Gem Trade Association
Home, Consumer Information, Jewelry and Gemstones - American Gem Trade Association. The Natural Colored Gemstone and Cultured Pearl Source of Information and Ideas.
https://agta.org/
Diamond Cutters International
Home, Consumer Information, Jewelry and Gemstones - Diamond Cutters International. Educational articles to help consumers choose a diamond.
https://www.diamondcuttersintl.com/