Aurora Opal Adjustable Ring in Oxidized Brass

The stone is synthetic opal, often called Auroral Opal or Nova Opal. The size of the stone is 12mm. 

This ring is a soldered ring and not wire wrapped.

The metal is oxidzed Brass. The ring is adjustable, shown adjusted to smallest size which is size 7, if adjusted up to higher size the gap in back will widen. Please note that lab opals show different colors as they move(see video).