This rich multicolored high quality tourmaline stone has beautiful inclusions and such clarity.  To do this gorgeous stone justice, I set it in a 22k gold bezel and let the stone shine through an open back.  The ring band is a cast twig. 
Simple, stunning, and stylish.
 
Details: 
Band: 1/4” wide
Stone: faceted tourmaline  3/4" x 1/2" 
Metal: sterling silver and 22K gold
Ring size: 6.5