Onice Pakistano Onyx is the perfect choice stone for furniture, bathroom, and around the fireplace. Onyx is a beautiful variation of limestone that has been slowly dissolved by water and deposited as a new stone. Water dripping from a cave wall will sometimes dissolve the minerals around it and deposit them together, creating a new stone. Onyx can be found in almost every color, and is known for its stunning bands of color. It will add beauty and value to your home.