Hi Everybody, I have a black stone having one kg weight square size like half brick, functions are as follows ; if a man standing on the surface of the stone give command to move right or left it will do, secondly if we will cover the stone by petrol spray cloth & fire the cloth will not burn, 3rdly if we will cover the stone by cloth keeping korpore on it & fire then the cloth will not burn also without any damage of stone. We have not know about the other function. If any body wants, pls contact me in this e-mail. E-mail-ajodisha@gmail.com