Amulet stone: also known as Mt Hay Thunderegg. This rare stone from Australia is a brecciated jasper, similar to mookaite, that has branching veins of silica-rich opalised material running through it, creating what look like jagged flashes of lightning - hence its name. This is a classic stone for the shaman, and for those who enjoy working with elemental energy, especially earth and fire. It will also help ground the inspirational and transformative energies of Archangel Metatron, and is full of life, energy and potential.