Solitaire ring. This is probably the smallest possible solitaire ring finger size 4 1/4 with 0.005pts (half pointers also called single cut) diamonds on sides. It will take round gem between 0.7 to 0.9ct as a center stone.  Shank is thick enough to be sized up to finger size 6. Diamonds only for visualization. If your 3D printer can print these details, it is good enough to print jewelry.