Jessica, you'd be amazed at the quiet little businesses busily
designing jewelry containing loved ones ashes, right along with
selling the urns and boxes. Since the "remains" have been put
through incredible incinerators, you can be sure that there is no
danger of being contaminated with anything - they are quite clean
and a very light gray as you'd see in an oft used fireplace.
Internet sites abound - ask Google for cremation containers.
Perhaps once upon a time the process wasn't quite so high-tech as now
and there may have been local regulations by health departments. That
doesn't seem to be the case now - one can have the ashes in, on or
sprinkled about any location one chooses. Hmmmmm. Pat