You never know what wondrous gems you will stumble upon when tide pooling. If you look closely enough, you may just find that a tiny silver pearl has formed inside each of the shells ...shhhh... its your hidden secret!
A word about oxidized silver: This is a thin layer that forms on the surface of silver by long exposure to air (oxidation) or through a chemical process. Also known as a patina, it is not a permanent coloration. With normal wear the coloring will eventually transform, offering your piece a truly unique look.