In geometry, the torus is the surface that a circle traces when it rotates about an axis in its plane without touching it. Familiar examples are the lifebuoy and the smoke ring, in which the air circles around itself.
The torus has no beginning and no end; its surface passes from the inside to the outside without an edge. The association has cast it in three forms that differ in their surface, each in white, shungite, silver and gold.
