Gold-tone heart pendant necklace

I lost my gold-tone heart pendant necklace yesterday around 3pm near the Buddy Holly Center on 19th Street in downtown Lubbock. It's a delicate two-inch chain with a small round heart pendant about 1 cm across; the back is engraved with the initials 'A.J.' and there's a tiny blue Swarovski crystal on the edge. The chain has a subtle patina from wear. It was a gift from my grandmother and means the world to me, so I’m really hoping someone found it and can tell me where it is. If you’ve got it, drop me a note.