Tiffany & Co Sterling Silver Elsa Peretti Sevillana O Pendant Silk Cord Necklace. The piece is in great used estate condition and ready to wear. It does not come with a pouch or box. The piece is signed "Tiffany & Co 925 Elsa Peretti Spain" on the pendant. The silk cord measures about 16" long. The O pendant measures 24mm x 24mm and the entire piece weighs 9.5 grams.