14k gold chain with sapphire pendant

I lost my 18-inch, 14k gold chain necklace with a heart-shaped sapphire pendant yesterday around 3pm near the Bon Accord Centre on Union Street in Aberdeen. Its clasp has a tiny engraving 'MJP' on the back, and there's a small dent near the pendant loop. The pendant is a deep blue sapphire in a slim gold bezel, and the chain shows wear from daily use. It was a gift from my grandmother and has sentimental value; I really need it back. If anyone found it, please drop it off at the Bon Accord Centre information desk or message me here.