It will be used on top of a wooden desk. However, the desk has leather panels in the top, and it will be used in a craft room, so the glass is necessary to protect the wood and the leather. My research suggests as Jeff does that tempered glass is overkill. Live and learn.The OP has not stated whether or not the glass will be placed on top of a wooden top or used as the actual desktop. If this is to be used in a home environment, I would be worried with small children around any type of glass being used like the OP stated. You can never be too safe when children are playing around or on such a surface.