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Loose Gems-Diamonds graded strictly to Gemological Institute of America (G.I.A.) standards for Colorless to Fancy Colored Diamonds. Testing of Color Origin of Colored Diamonds is not done by Guild Labs. Precious Stones-all species & varieties including Jades, Opals, Ornamental Stones & Man-made Stones Mineral Specimens as Decorative Art-all species & varieties. Coins & Currency-U.S. & foreign 18th through 21st century coins & currency. Jewelry-Modern Jewelry & Period Jewelry including Retro, Art Deco, Art Nouveau, Edwardian, Early, Mid and Late Victorian, Georgian and earlier western periods. Also Designer Jewelry, Watches, Ethnic Jewelry and High-End Costume Jewelry.