For use in bathrooms, around fireplaces, and as unique furniture pieces, Onice Kilimanjaro Onyx is a very popular choice. Onyx is made of deposited minerals that have been dissolved from other rocks, transferred, and deposited as a new stone. It is frequently found in caves, and the water dissolves minerals and deposits them as stalactites and stalagmites. Onyx is characterized by its bands of color, which can be almost any color. It will add beauty and value to your home.