14k white gold ring with small diamond

I lost my 14k white gold ring yesterday around 3pm near The Grove entrance on Fairfax Ave in Los Angeles, by the fountain area. It's a slim 4mm band with a tiny bezel-set diamond on top, and inside the band there's an engraving 'PP-1999' that I could recognize. It has sentimental value since it was a gift from my grandmother, and I’m really hoping to get it back. I was grabbing a latte at a cafe near the entrance and I retraced my steps, but it's gone. If you found it, I’d be forever grateful—this ring means the world to me.