#1 Diamond Source sells loose diamonds at wholesale prices for custom designed engagement rings and diamond studs. Our dedicated GIA Graduate Gemologist and diamond specialists are passionate about giving genuine personal service and expert guidance and we can custom set your loose diamond choice in our own factory to your exact specifications at a much lower cost. Our huge selection of GIA certified loose diamonds are guaranteed to originate from ethical and socially responsible sources. Members of: The Better Business Bureau, Jewelers Vigilance Committee, Stopblooddiamonds.org.