The British have so many more radiator options than we do here in the States. This one's new to us: it's the Marble Heating Company's stone radiator.
The design takes advantage of the heat retention properties of natural stone. The radiators become almost architectural, as large, solid, slabs of stone...
The slabs are warmed with electric heat, retaining it and distributing it through a space. The Marble Heating Co. states that in any given hour, the actual heating element is working for only 10 to 15 minutes. The rest of the time, the stone is slowly releasing heat.
The stone radiator design won the Product of the Year award at the Design and Decoration Awards in 2005.