Silver-toned ring with emerald centerpiece

I lost my silver-toned ring yesterday around 3pm near Union Station in Ogden, by the steps off 25th Street. It's a size 7 two-tone band with a small round emerald set in a bezel, and there's a tiny dent on the inner edge where I bumped it last week. The ring is from a family heirloom, and the emerald really brightens the piece. It has sentimental value and I’d be beyond grateful to have it back. Inside the band there’s a maker's mark 'K.S.' that might help identify it.