This is Open Heart by Tiffany & Co. It is a beautiful item with SA rank: Polished. Brand name: Tiffany & Co. Model name: Open Heart Size Chain length: 40.5 cm (15.94 in) Pendant: Height 1.3 cm (0.51 in) x Width 1.5 cm (0.59 in): 3.3 g Accessories None Material 18K N: S: Unused items, exhibited items that we judge to be similar. SA: Clean item with almost no signs of use. A: Item in good condition with little signs of use. AB: Item with some signs of use, dirt, and scratches B: Item with scratches, dirt, or signs of use BC: Item with noticeable signs of use, dirt, or scratches C: Item that is considered junk.