FREE GIFT WITH EVERY PURCHASE (random natural beach stone necklace) Nature's Art Beautiful Unique Rustic Naturally Holed Stone Necklace - I love collecting these unique stones, when I'm lucky enough to find one. The holes and grooves in these stones are formed when small mollusks called Piddock (aka Angel Wings) drill a hole in the stone using their shell and then they live in the hole. If the hole goes all the way through, the stone is long believed to protect against evil and possess magical