Invoke Energy of the Planets and Signs of the Zodiac Unicursal Hexagram Amulet Pendant Necklace The Unicursal Hexagram is a powerful symbol for use in your magical practice. Has cord. Often used to invoke the energies of the Planets or the Signs of the Zodiac. Size: 1 1/2" x 1", Pewter. Unit weight: 0.050 lbs.