Lost gold heart-shaped pendant necklace engraved with initials 'A & J' in the White Mountains, New Hampshire.

I lost my gold heart-shaped pendant necklace while hiking in the White Mountains of New Hampshire last weekend. It has a delicate chain and the heart pendant is engraved with the initials 'A & J'. I'm really heartbroken about losing it, as it was a gift from my grandmother. I remember taking it off briefly to wipe my sweat and then I think I dropped it. If anyone finds it, please let me know!