Onyx Black And White Marbled Vase Egg LargeBlack Carved Stone Vase Onyx is a black and white banded variety of Chalcedony, a cryptocrystalline form of Quartz with numerous dense layers. It is also defined as a black and white banded Agate, also a variety of Chalcedony. Onyx has a paralleled layered structure and has countless healing effects whether you are wearing it or displaying it in your home or at the office. It is a gemstone that draws protection, boosts willpower, and promotes