Item #: 147914 This is an authentic TIFFANY & CO 18K Yellow Gold Atlas Bar Pendant Necklace. This stunning necklace is 18K yellow gold with a bar engraved with the roman numerals 3, 6, 9, 12 with a distinctive look, from Tiffany & Co! Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.