Silver ring with opal center stone and initials AR

I lost my silver ring with an opal center stone yesterday around 3pm near the Ector County Courthouse in Odessa. It's a slim sterling band, about 4.5 mm wide, with a small oval opal bezel-set at the top and a barely noticeable scratch along the outer edge. On the inside of the band is a tiny engraving: AR. This ring used to be a gift from my grandmother, and it means a lot to me - if you found it, I would be really grateful to get it back.