how to facet
gemstone main cabochon creation
min data

Mineral: quartz
Gem: chinese dendritic jasper (aka: red butte jasper)
Size: 25x38 mm & 2 x29 mm & 21x21 mm
Carat: 71+ ct & 50+ ct & 41 ct
Cut: freeform cabochon
Origin: Oregon
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
Found in Oregon's Owyhee Mtns. A pale cream to tan colored background (sometimes with a hint of pink), and red and black dendrites. Some of the red dendrites are surrounded by soft green glow. The finished stones often remind one of Chinese paintings, hence the name. (I have seen it called red butte jasper, rocky butte jasper, and owyhee flower jasper.)

These three stones are chinese dendritc in the center with black jade frames and backing. All stones cut by the author.

Closeup of chinese dendritic jasper Closeup of chinese dendritic jasper