Silver ring with ruby accent

I lost my sterling silver ring with a tiny ruby accent yesterday around 5pm. I was wandering through Rittenhouse Square, near the fountain on 18th Street between Walnut and Locust, when it must have slipped off. It's about 6mm wide, a smooth band with a small ruby bezel-set on the top, and there's a tiny dent on the inner edge plus an engraving 'ER' inside. This ring was a gift from my grandmother and holds a lot of sentimental value, so I really need it back. If you found it, please email [email protected].