twinmonkeytattoo: “ Platonic Solid In three-dimensional space, a Platonic solid is a regular, convex polyhedron. It is constructed by congruent regular polygonal faces with the same number of faces meeting at each vertex. Five solids meet those.
Fibonacci Signet Ring - This signet ring is perfect for those who appreciate mathematics. A spiral representing the Fibonacci Golden Ratio is etched into the flat surface on top of the ring. The sides have numbers and a Greek letter.