All rings are set in silver on a saddle band (think English riding saddle wide on top narrow underneath) EXCEPT C & D which are set on flip bands (cigar band w/flat side).  The Pearls run from 10mm to 12mm.  The color is grey with a tinge of blue. A).   3/4"long x 5/8"wide; B) 1 1/2"long x 3/4"wide; C) 1/2" x 1/2"; D) 3/4"long x 1/2"wide;   E) 3/4" x 3/4"; F) 3/4" x 3/4".