Tiffany & Co. sterling silver Heart & Key necklace. Condition: This item is in good pre-owned condition, showing scratches, discolouration and loss of luster. Drop: 41.6 Material: Sterling silver Condition: Good, but used. A good but used item will have been worn and potentially washed but will be in good condition and well taken care of. The item will have visible wear and tear but the defects will be minor. These have to be mentioned and visible in photos.