Authentic Tiffany & Co. Open Atlas Necklace with Diamond Center Atlas Collection Made in Italy Retired style Features: Solid stamped .925 Sterling silver Atlas pendant with signature roman numerals. Real diamond in center. Thick solid stamped .925 Tiffany 20" chain w lobster claw clasp. Stunning diamond pendant from the iconic Tiffany & Co Atlas Collection. Diamond examined by my jeweler and is in pristine condition. Includes Tiffany blue box & tarnish proof pouch. No tarnish or damage. Beautiful condition.