Silver necklace with ruby heart pendant

I lost my silver necklace yesterday around 3pm near the Brunswick Public Library on Park Row, right by Bow Street Market. It's a thin 18-inch sterling silver chain with a small heart pendant that has a tiny ruby inlay. The back of the pendant is engraved with the initials 'KP' and the clasp is a little stiff. It feels sentimental—my mom gave it to me last year and I wear it every day. If someone found it, I'd really appreciate getting it back.