Gold-tone pendant necklace with heart charm

I lost my gold-tone pendant necklace yesterday around 3pm near the Starbucks on Main Street in Las Cruces. It's an 18-inch delicate chain with a small heart pendant that has a tiny ruby bead in the center, and the back is engraved with 'AK'. The clasp is a bit stiff and the chain shows a little wear from daily use; it was a gift from my grandmother and means a lot to me. If you found it, please reach out—I really need to get it back and would be forever grateful.