White gold delicate floating heart w natural diamond necklace 18” chain stamped

Alas, as he goes, so do his gifts! This is a preowned white gold, with STC 14K stamped floating heart with diamond necklace. I’m not sure of the exact size of the diamond, but I do know it is a natural diamond. I have placed a quarter next to the heart to compare size. I looked up a very similar necklace and they run for about $550 (in gold, not white gold). Of course Tiffany’s which is very similar as well, runs for $1500. In comparison to other similar floating hearts w diamonds I like this better as the chain goes through a little opening in the heart, as opposed to just looping through the center, this keeps it from flipping over. The chain is very delicate, and white gold as well. If it does flip over, it is not hollow on the other side, it is solid. It’s about 18 inches long. Like new, see all pictures. I don’t see any scratches or flaws, kinks in the chain. It has a small lobster clasp closure. It was good while it lasted!😂🤣😆Thanks for the memories!