This is Torus Yantra crystal #2 grid made out of Birch wood. These are made to order, you can choose between approximately 4, 6, 8, 10, 12, and 14 inches in diameter and 1/4" thick. 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.
The Torus is the aura at the sacred geometrical level which í_í_í_gives and receives energyí_í_Œé The Aura is the connection points of all your chakras together which creates the vortex energy. the balance of yin/yang
Crystal grid and healing sets are groups of stones that go together for a purpose. Sets of crystals and stones are used for ritual magickal or spiritual crystal healing purposes or with Reiki-Seichim energy work for healing. Some are generalized and others have specific purposes.