Adjustable Rainbow Obsidian Ring in Wire Wrapped Argentium Silver.
Size 10 and up.
Rainbow Obsidian is a type of black obsidian that when highly polished and exposed to strong, bright light reveals lustrous layers.
The stone is made of volcanic glass, and the layers are caused by the pyroxene’s nanoparticle inclusions.
It looks like a black stone at first glance, but you will notice the band of pretty rainbow colors in the stone.
Argentium silver contains a greater amount of pure silver (935 which contains 93.5% pure silver with the remainder being made up of other alloys, such as a small amount of germanium). This makes it more tarnish resistant than Sterling (.925) Silver.
