Lost gold engagement ring with a small diamond and intricate filigree detailing found at McCormick Park, Missoula.

I lost my gold engagement ring while walking my dog at McCormick Park in Missoula. I noticed it was missing after I sat on a bench to rest. The ring has a small diamond in the center with intricate filigree detailing around the band. It holds a lot of sentimental value to me, and I'm really hoping someone finds it.