14k gold-tone necklace with emerald pendant

Yesterday around 3pm I lost my 14k gold-tone necklace outside the Tropicana Evansville on Riverside Drive by the riverfront. It's a delicate 18-inch chain with a small emerald pendant shaped like a leaf, and there's a tiny scratch near the clasp that makes it easy to identify. It was a gift from my grandmother and has sentimental value, so I’m really hoping it turns up. If anyone found it, please reach me at [email protected]; I’d be so grateful to get it back.