Navy blue formal gown with beading

I lost my navy blue Calvin Klein floor-length gown yesterday around 3pm outside the Macy's entrance at Destiny USA in Syracuse. It's a size 6 satin gown with a halter neckline and a delicate beaded belt, plus a small snag on the hem from a door frame. The color is a deep sapphire navy, and there's a detachable silver belt buckle that stands out. The back zipper works, but the hem is a touch creased from being folded in a garment bag. It was a gift from my grandmother and it means a lot to me—I have a wedding next weekend and really need it back. If anyone found it, please contact me; I’d be grateful to pick it up as soon as possible.