Emerald ring; sterling silver; inner inscription

I found a ring this morning around 11:15am near the Springfield Central Library on Elm Street. It's a sterling silver ring, about 6mm wide, with a bezel-set emerald and a couple of tiny floral engravings along the outer edge. Inside the band there's an engraving that reads 'M.L. 2016' and a few light scratches from everyday wear. If this sounds familiar, ping me and we can set up a safe handoff at the library lobby or a nearby cafe.