The cab measures 18.9mm x 22.4mm x 4.2mm thickness. The WEIGHT is 12 carats. This cab is not backed. The dark areas are also a deep purple.

Jasper is a fine grained variety of Chalcedony. It is found in all colors including: red, brown, pink, yellow, green, grey/white and shades of blue and purple. Found worldwide, jaspers are also found in the United States in western areas; California, Oregon, Idaho, Utah, Wyoming and Washington.