This pendant features a botryoidal psilomelane. It is totally uncut, & has naturally grown to look a lot like a mitten It is set in solid sterling silver wire. Psilomelane is a very beautiful material made up of a mixture of manganese oxide minerals. Manganese oxides are known for their deep black colorpowder of this material is used for taking fingerprints for this reason. However when it forms crystals they show a beautiful silvery glossiness over the black base. This, along with their unusually sculpted forms make for a striking & unique natural treasure. This is a really interesting example, with polished bubbly faces & an unusual mitten-like form. J69 0122 Natural Psilomelane Mitten Necklace in Sterling Silver, Black Gem Jewelry, & Silver Botryoidal Orbicular Crystal Pendant For A Gift