This is a sterling silver 2001 Tiffany & Co 925 pendant on a sterling chain. It was on a black chord. I added a custom sterling bail to the heart and put it on a 18 inch sterling silver necklace marked  'KC 925'. Pendant is 1.45 inches tall including the bail, 1.2 inches without the bail and 1 inch wide. The pendant is used and you can see wear on it. Please see pictures for condition. The whole thing weighs 11 grams.