Tiffany and co. 2 inch citrine heart key vintage

In very good used condition It’s a key chain in sterling silver and a citrine heart I used this as a necklace on a 30in chain so it’s in great shape It has been polished many times so the hallmark is not as deep any more but it’s clearly visible Was taken to Tiffany a few years back to re attach the stone that was a bit loose so now it’s back to like new condition Can also be use on a purse to add some extra detail Last picture is to show the color next to lemon quarts earrings