#523 3rd Degree Masonic Blue Lodge Ring 10KT or 14KT Yellow or White Gold, Open or Solid Back #523. The sides of the shank are plain on this ring. This is a relatively small ring. It makes a great man's pinky ring or ladies ring. Because of its size, I do not recommend going over a size 9.5. The approximate dimensions of the top of the ring are 9.5mm by 11.5mm.