Gold-tone necklace with sapphire pendant

I lost my gold-tone necklace yesterday around 3pm near the Cumberland Valley Farmers Market on Parkside Ave, by the red brick fountain. It's an 18-inch chain with a small oval pendant that holds a tiny sapphire and has the initials 'P.T.' engraved faintly on the back. The chain has a couple of fine scratches from wear, and the pendant catches the light in a way that makes the sapphire sparkle. It means a lot to me—it was a gift from my grandmother and has sentimental value. If anyone found something matching this, please get in touch—the hunt has felt really urgent and I’d be grateful to have it back.