This is my own invention. It is one of my studies in 3 dimensionalizing the tradition Metatron's Cube design. The evidence that this is a good representation of the 3D form (minus the connecting lines which make it a bit cluttered, though I have printed it this way), is that if you cut this in half along any of its 4 great circles, you would reveal the circles of the 2D Metatron's Cube within. Making each of the small spheres into the same cuboctahedral geometry as the whole form gives it a fractal quality. The 12 spheres surrounding the center...