Gold-tone heart pendant necklace with ruby

I found a gold-tone heart pendant necklace this afternoon around 2:15 pm near the Old Town Library on Main Street in Jackson. It has an 18-inch delicate chain and a small ruby accent on the heart charm. On the back there’s an engraving with the initials 'A.J.' and a tiny scratch along the edge. The necklace is in decent condition, though the clasp is a bit stiff. I imagine it might be important to the owner for sentimental reasons, and I’d love to help reunite it with them if possible.