Gold chain necklace with heart pendant

I lost my gold chain necklace yesterday around 3pm along the Brighton seafront near the Palace Pier. It's a 14k gold chain, about 18 inches long, with a small heart pendant and a tiny sapphire stone set in the middle. The clasp is a little bent and the back of the heart is engraved with 'PP'. It was a gift from my grandmother and holds a lot of sentimental value. I last had it near Madeira Drive, between the pier entrance and the wheel, and I think it might have slipped off when I was ducking under a selfie stick. If you found it, DM me here and we can arrange a meetup near the Pier; I’d really appreciate getting it back.