Established in 1931, GIA is an independent nonprofit that protects the gem and jewelry buying public through research, education and laboratory services. GIA’s Guide to Gemstones: Gem Encyclopedia GIA’s Gem Encyclopedia is a virtual journey through the science and lore of gemstones from across the globe. Each precious stone page features additional detailed gemological information, a buyer’s guide, photos, videos & research. Shop 100% lab-certified gemstones, Rudraksha, and spiritual jewelry online at GemsMantra. Trusted by 1 lakh+ customers across India for authenticity, value & service. Discover 25 unique gemstones, their powerful meanings, and the benefits they bring. Learn about the significance behind each stone.
