Cleaning and restoring colors in seashells...Rinsed in warm water and soak for 24 hours in bleach water. After totally drying, rub each shell with baby oil or with satin varnish to preserve natural color. *Another blog says shells can be soaked a week or more in bleach water if needed.
A DIY that practically holds your hand as you learn to Drill small beach stones to make jewelry. From choosing the stones and Dremel Tool bits, to using in finished pieces. See for how to use a Dremel to carve words or images on the rocks.