how to facet
gemstone main cabochon creation
min data

Mineral: quartz
Gem: tahoma jasper
Size: 22x47 mm & 22x47 mm
Carat: 47 ct & 50+ ct
Cut: freeform cabochon
Origin: Washington
General Info: Jasper is derived from the Anglo-French "jaspre", meaning "spotted stone". Jasper is usually formed from old sediments (or volcanic ash flows) that have been glued (and at times replaced) with silica.

Flow patterns of the original material are often easy to see. Many jaspers are know as picture jasper because they contain what appear to be small images of sand dunes, mountains, plains, and even sky. Since the original materials were likely cross bedded sediments, they often contain the structure they mimic.

Additional Information
Another of those "inbetween" materials that is sometimes more agate and sometimes more jasper. The material comes from the slopes of Mt. Rainer. It often has light colored "fingers" or tube like structures in a dark background. The patterns vary strongly from piece to piece.

These two cabs cut by author and the center oe each is tahoma jasper, the frames are black agate. There is no backing.