Silver Rhinestone Evening Bag Damaged

Used once for my wedding. Purchased at David's Bridal. It has been stored in a bin with my other bags in a spare bedroom. I'm not sure why but this bag has rust on it. Possibly something was spilled on it at the wedding but I do not recall. It cannot be moisture damage as it is not in a damp space. There does seem to be an uneven coloring to the rhinestones. Personally, I think it is still great for a wedding or a night out. Looks pretty and functions. The back is a silver sparkly cloth. No inside pockets. There is a chain attached.