My wife wears a locket very similar to that. It has a small amount of her mother's ashes in it. I wonder if the lady actually opened the little urn inside the locket to literally view the ashes or if she is just assuming that it contains ashes? The video says the locket "could" contain ashes. Also, it's in the original box. Seems strange that someone would put a cremation locket back in it's original box, if it already had the dearly departed's ashes in it?
BTW- For cremated remains the formula is 1 pound=1 cubic inch, those little lockets contain less than 1 cubic inch of ashes.