This ring features a Gold in BLACK Quartz stone set in a durable 14 karat Gold band with a pane of natural Alaskan gold nuggets on either side. Band measures 10mm at widest point and shank is 4mm. European Shank. Pure veins of gold were forced into quartz by hydro-thermal pressure while they were both in a molten state. These rare formations are found in their natural state by hard rock miners. Pieces of exceptional quality are hand cut into individual stones and polished. Each gemstone of gold dispersed crystal is one of a kind. Heavy and extremely durable. Gold in Black Quartz (Midnight Gold in Quartz) is mined north of the Arctic Circle, the northernmost mine in the world!