Jet Crystal Quartz Icosahedron Gemstone Sphatik, 10-15mm — Open-Box, 14% Off

Authentic Crystal Quartz Icosahedron: Made from natural Brazilian crystal quartz, carved into a precise icosahedron shape for energy work and decorative use

Supports Chakra & Energy Practices: Suitable for meditation, pranic healing, radionic work, and balancing energy centers

Vastu & Feng Shui Compatible: Enhances positive energy in home or office spaces according to Vastu and Feng Shui principles

Compact & Versatile Size: Approximately 1015 mm, suitable for carrying, display, or including in crystal grids and altars

Thoughtful Spiritual Gift: A meaningful gift for crystal enthusiasts, meditation practitioners, and those interested in metaphysical or healing tools

Platonic Solid Geometry: Features the sacred icosahedron shape, one of the five Platonic solids traditionally associated with the water element in ancient philosophy

Natural Gemstone Quality: Each piece is hand-carved from genuine Sphatik crystal, ensuring authentic quality and unique natural characteristics in every stone

Approx. 10 - 15 mm. Now, each interior angle of an equilateral triangle is 60°, hence we could fit together three, four, or five of them at a vertex, and these correspond to to the tetrahedron, the octahedron, and the icosahedron. Each interior angle of a square is 90°, so we can fit only three of them together at each vertex, giving us a cube. (We could fit four squares together, but then they would lie flat, giving us a tesselation instead of a solid.) The interior angles of the regular pentagon are 108°, so again we can fit only three together at a vertex, giving us the dodecahedron. The Greeks, who were inclined to see in mathematics something of the nature of religious truth, found this business of there being exactly five Platonic solids very compelling. The philosopher Plato concluded that they must be the fundamental building blocks—the atoms—of nature, and assigned to them what he believed to be the essential elements of the universe. He followed the earlier philosopher Empedocles in assigning fire to the tetrahedron, earth to the cube, air to the octahedron, and water to the icosahedron. To the dodecahedron Plato assigned the element cosmos, reasoning that, since it was so different from the others in virtue of its pentagonal faces, it must be what the stars and planets are made of.