Uses 8mm beads, size 80 x 95 mm A hexagon-shaped purification mat. Since the original shape of crystal is a hexagonal pyramid, it is said that the hexagon maximizes the power of the crystal. A crystal purification mat, which is an aggregate of hexagons, is an ideal shape for purifying power stones and also for purifying space in rooms, etc. The hexagon contains the Star of David. The Star of David represents the yin and yang of all things in feng shui and is considered a symbol of "harmony" and "stability." If you place power stones on this crystal purification mat as a Star of David base, the power of the stones will increase synergistically, creating a small power spot. Quoted from the Internet.