May we suggest:
CJ Recht Bronze Moonscape Ring
The Moonscape Ring may be the boldest ring in the CJ Recht collection. Here it appears in bronze – which goes with everything. The ring is set on a square shank which keeps it from rolling around and looks cool at the same time. The circular top is heavily textured with alternating light and dark ridges which create a stunning effect. The Moonscape Ring is also available sterling silver and blackened silver!