Gold-tone necklace with sapphire pendant

I lost my gold-tone necklace yesterday around 3pm outside Waterstones on Broad Street, Reading. It's an 18-inch slender chain with a tiny sapphire heart pendant. The clasp has a small engraving of the initials 'AF' on the back, and the pendant catches the light with a subtle blue sparkle. The chain has a couple of micro-scratches from daily wear, and this piece was a gift from my grandmother, so it means a lot to me. If you found it, drop me a message here and we can meet up near The Oracle or Reading Station to hand it back.