Green Dop Wax has been the industry standard for many years. It has a very strong bond and softens at 150 degrees Fahrenheit.  Black Facet Wax is an extra strong, high temperature wax that softens at 170° Fahrenheit. The Covington Dop Stove is capable of melting this wax as well as green wax. For easiest removal from your stone, simply place stone and wax in the freezer and wax will snap off of the back of your piece.