This Cyclone Ring is 18k gold and oxidized silver with a large bezel set center diamond.  Hand fabricated, hammer textured. Available in various widths, colors and cuts. 

AU/WHITE:  Brilliant cut diamond set upside down, .95ct with white melee, 0.04 tcw
AU/GRAY:    Gray Brilliant cut center diamond, shown with .95 ct.

AU/RUSTIC GRAY: Gray Brilliant cut center diamond, shown with 1.13 ct.