Our Xsis Companion ring, shown with the Xsis ring follows the same curves,
and has the same anti-rotation squared back on the bottom, or could be fully
round as seen from a finger tip view. The ring varies a bit in width as it goes
around and has has smooth curved sides.
Note that the Xsis and Companion are shown together for visual purposes; the
Xsis must be ordered separately, but you knew that...
