Lost gold engagement ring with sparkling diamond near Fairbanks Park in Terre Haute.

I lost my gold engagement ring while walking my dog near Fairbanks Park in Terre Haute. It has a sparkling diamond in the center and has quite a bit of sentimental value to me. I think it may have slipped off my finger while I was pulling on the leash. I've retraced my steps multiple times and would be heartbroken if I can't find it.