This Clear Quartz crystal collection has been polished into the 5 geometric shapes that are found in nature. They hold a harmonious energy. Hexahedron • Earth, 6 facets Tetrahedron • Fire, 4 facets Octahedron • Air, 8 facets Dodecahedron • Ether, 12 facets Icosahedron • Water, 20 facets