Bright Opal Ring SIZE M 1/2 or 6.5

Gorgeous round boulder opal weighing in at 2.36 ct, in such a unique blue that i've never seen before! This opal is wrapped in fine and sterling silver, set atop a 1.75mm round sterling silver wire shank.
 
Ring is size M 1/2 or 6.5, and cannot be resized.