This is a Pentagram crystal 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 4mm thick. This is just for the grid, stones much be purchased separately.
Pythagoreans used the pentagram to symbolize the five elements: Idea, Heat, Air, Earth and Water. The ancient Pythagorean doctrine symbolizes Pentechymos with the symbol, meaning Ì__Ì__Ì_•À_Ì_Ì_̨Ì__Ì___Ì__å´ÌÜ_Ì__Ì_‰Û_Ì___Ì_Ì_åÈå´ÌÜ_?five-chamberedÌ__Ì__Ì_•À_Ì_Ì_̨Ì__Ì___Ì__å´ÌÜ_Ì__Ì_‰Û__?. In Hebrew tradition, the pentagram is ascribed to the truth.
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.