The Classic Round with Mokume ring has a modernistic clean look with an inlay of either gold and silver or white gold and silver mokume. The inlay can be oxidized to darken the silver if you like.  Just write that in the Comments section. The ring can utilize your diamond or an optional Cubic Zirconia or other gemstone.   Since this ring is symmetrical, the height of the stone will determine the thickness of the ring, so smaller diamonds (below around 3mm diameter) make for more comfortable rings. The ring shown has a diamond that is about 4.5mm in diameter in a Brushed finish.