This is a Torus Yantra crystal grid made out of Birch wood. This is just for the grid, stones much be purchased separately.
In geometry, a torus (plural tori) is a surface of revolution generated by revolving a circle in three-dimensional space about an axis coplanar with the circle. ... Real-world examples of toroidal objects include inner tubes.
Beautiful wooden grid that emits the energy created by the torus design.