Silver moon pendant necklace with initials on back

I lost my silver moon pendant necklace yesterday around 3pm near the ISU Memorial Union on Lincoln Way, Ames. It's an 18-inch sterling silver chain with a delicate moon pendant and a tiny star charm; the back is engraved with the initials 'P.P.' The chain is a bit tarnished near the clasp and there's a small scratch on the moon, which actually helps me identify it. This necklace was a gift from my grandmother and means a lot to me; it carries sentimental value. If you found it, a quick message would mean a lot — I’d be really grateful to get it back.