Gold-tone necklace with ruby heart pendant

Found a gold-tone necklace with a small ruby heart pendant this afternoon around 2:15pm along the Atlantic City Boardwalk, near the Steel Pier behind the arcade. The chain is about 18 inches long and shows some wear, with a touch of tarnish near the clasp. The pendant is a delicate ruby heart that catches the sun, and there’s a tiny engraving on the back—'A.R.'—a detail I noticed right away. It seems sentimental, and I’d love to help reunite it; if this belongs to you, message me here with the initials and pendant details to verify.