14k gold ring with diamond and engraving

I lost my 14k gold ring yesterday around 3pm near the Campanile on the ISU campus in Ames. It's a slim 6mm band with a tiny diamond in the center and a delicate engraving 'A+K' on the inside. The ring has a few scratches from daily wear but is otherwise in good shape. It has a lot of sentimental value—it was my grandmother's ring and feels like a family heirloom. If someone found it, I’d really appreciate getting it back.