Learn About Diamonds, Gemstones & Jewelry Diamond Education: Gemological Institute of America www.giaedu.com Natural Diamond Council www.naturaldiamonds.com Diamonds do Good www.diamondsdogood.com Gemstone Education: AGTAwww.agta.org Metal Education: World Gold Councilwww.gold.orgThe Platinum Guild Internationalwww.platinumjewelry.com Pearl Education: Cultured Pearl Association of Americawww.cpaa.org