Navajo made sterling silver and turquoise ring.  Beautifully done traditional leaf and scroll silverwork frame a sky-blue oval Sleeping Beauty turquoise stone setting.  Stamped R.B.  Stone measures 5/8" x 1/2"; ring is 1" across at widest point x apprx 3/4"; shank graduates from 1" wide at top to just under 1/4" wide at bottom.  Size 11 1/2.  One available