Sterling silver heart pendant necklace, 18-inch chain

I lost my sterling silver necklace yesterday around 3pm near the Chillicothe YMCA on Water Street. It's an 18-inch chain with a small heart pendant, about the size of a dime, and there's a tiny dent on the back from a fall last winter. The clasp has a faint blue enamel mark I added years ago, a unique identifying feature, and it's sentimental—my grandmother gave it to me. I really need it back; if you found it, please reach out via [email protected].