Abstract: This invention is a set of magnetic building blocks. Each block or piece in the set is in the shape of a right golden rhombic pyramid. There are two important fixed proportions that dictate each block's shape. The first is that the pyramid's base is a golden rhombus. That means the ratio of its long diagonal to its short diagonal is 1.618, otherwise known as ?, or the “golden ratio.” The other important proportion of each block's shape is the height of the pyramid. The height of the pyramid as measured from the rhombus base centroid (the point at which the two base diagonals intersect) to its apex is (?+1)/2 or approximately 1.309 times the length of the short diagonal in the rhombus base. Each building block has magnets embedded in its interior faces. This means that the pieces will stick together magnetically. The user can build various shapes and designs with the blocks. The set of building blocks can be used as a creativity tool, toy, puzzle, game, display device, creativity prop, and cognitive stimulant.