Stargate Diamonds: Specializes in ruby rings, sapphire, emerald, fancy diamonds and other diamond gemstone jewelry. USA Certed Diamonds: Sells GIA and AGS certified diamonds. Steve Padis Jewelry: Online jewelry catalog includes diamonds, diamond rings, wedding bands, diamond and gold earrings. Van Moppes Diamonds: Wholesale list of loose diamonds. Solomon Brothers: Search for loose diamonds by cut, color, clarity, carat weight or price. Opportunity Diamonds: Offering AGS, GIA, EGL certified diamonds as well as rings. Also offering colored diamonds. red Diamonds. NovaDiamond: Natural diamond color-restored by high pressure and temperature. New York Diamond Exchange: Loose diamonds. Provides timely market prices on diamond sizes from .70 carat up to 2.49 carats, colors from D to ...