Silver-tone crescent moon necklace

I lost my silver-tone crescent moon necklace yesterday around 3pm near the Starbucks on Main Street in downtown Chico. It's an 18-inch chain with a delicate crescent moon pendant and a tiny ruby bead near the bail. The chain shows light scratches, and the lobster clasp bears a small heart stamp on the back. It was a gift from my grandmother and means a lot to me, so I’d be incredibly grateful to get it back.