Shungite Ikosahedron 4 cm

Platonic solids or geometric polyhedrons consisting of regular polygons. 

Such polyhedrons have been known since ancient times and are characteristic of Plato's philosophy, in whose honor they were named "Platonic solids". Plato wrote about them in his treatise Timaeus (360 BC), where he compared each of the four elements (earth, air, water and fire) to a certain regular polyhedron. 

Shungite icosahedron is equal triangles with a side length of 4 cm. The icosahedron symbolizes the element water as the most streamlined of the figures.