This is a Moon Phase 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 1/4" thick. This is just for the grid, stones must be purchased separately.
The moon is a feminine symbol, universally representing the rhythm of time as it embodies the cycle. The phases of the moon symbolize immortality and eternity, enlightenment or the dar k side of Nature herself.