Selenite cleans and clears energies to keep negativity away.  Since it is flat, you can place stones that need to be energetically cleaned on it.  Leave them on the log until they are clear and ready to use! This is also a great tool for energy workers. 
 
Size:  approximately 6" x 1" x .38".
 
Price is per piece.
 
Available:  1, 2, 3, 4, 5, 6, 7, 8 ,9, and 10.