Rose-gold ring with emerald and inner engraving

I lost my rose-gold ring yesterday around 3pm near Blackwell's on Broad Street, Oxford. It's a 14k ring with a slender 2mm band and a small bezel-set emerald on top. The inside of the band is engraved with the initials 'P.K.' and there's a tiny scratch along the outer edge from a recent tumble on the pavement. It was a gift from my grandmother and carries a lot of sentimental value, so I really need it back. If anyone found it, drop a message here and we can arrange a meet-up, maybe around the Covered Market or near Oxford Town Hall.