Onyx is a cryptocrystalline form of quartz. The colors of its bands range from white to almost every color (save some shades, such as purple or blue). Commonly, specimens of onyx are black with bands of white. This finely crafted glycerin soap is made to look like a gemstone and has cucumber citrus gardenia fragrance. It is gentle on the skin and creates a rich lather when used. When you use this soap, the water lights up its brilliant colors. As you use it the colors weather away exposing even more beauty! Place this on your kitchen counter or bathroom sink for a beautiful decoration.