Gold ring with sapphire, engraved initials inside

I lost my gold ring yesterday around 3pm near the Lincoln Memorial, at Constitution Ave NW and 23rd St NW. It's a 14k yellow-gold band, thin and delicate, with a small sapphire bezel-set on the top. The inside is engraved with the initials 'M.S.' and the year '1992'. It has sentimental value—was a gift from my grandmother—and I’m really hoping to get it back. If you found a dainty ring with a tiny sapphire near the National Mall, please reach out. I’d be forever grateful.