Gold-tone necklace with heart pendant

I lost my gold-tone necklace yesterday around 3pm outside the Free State Brewing Co on Massachusetts Street in downtown Lawrence. It’s a 16-inch chain with a small heart pendant about 0.4 inches tall, and there’s an engraved 'A' on the back. There’s also a tiny enamel blue flower charm near the clasp. The chain has some wear, but the pendant and charm are intact. It’s really sentimental—it was a gift from my grandmother and I’d be devastated to lose it. If you found it, I’d be incredibly grateful to get it back; I can meet somewhere safe in Lawrence to pick it up.