Gradient block - sky in a box

Sample of gradient 3d forms. 
Here a half sphere is placed in a slab built box of a blend of porcelain/stoneware. The deeb blue gradient creates a illusion effect of a boxed in sky.
 
The box and gradient are polished. It can be mounted to the wall, as it has two holes on the bottom side.
 
Dimensions: 12 by 12 by 9cm