Silver heart necklace with ruby charm

I lost my 20-inch sterling silver necklace yesterday around 3pm near the Boot Hill Museum on Front Street in Dodge City, Southwest KS. It's a simple chain with a small heart pendant that has a tiny ruby inlay; the back is engraved with A&J, and there’s no visible brand stamp. The chain is slightly tarnished from wear, but otherwise in good condition. This necklace means a lot to me—it was a gift from my grandmother—and I’m really hoping someone who finds it will return it.