The Stone Door is a door you can build (the Stone kit).
In-game description
Iron-strapped oak in a dressed stone frame. Opens and closes with E. Slow to break.SHOWN IN THE BUILD RING
Building it
It costs 3 
Stone, 2 
Wood, 2 Earth 1 Wind spirits. It needs 2 Jewels first. Take it down with DISMANTLE to get its cost back (see Building).
