Lost delicate gold chain necklace with a small heart pendant and unique clasp near the beach in Ventura County.

I lost a delicate gold chain necklace that has a small heart pendant attached. I believe I misplaced it while walking along the beach in Ventura County yesterday evening. It has a unique clasp, and I would recognize it immediately if I saw it again. It has sentimental value to me, as it was a gift from my grandmother.