jas·per | ˈja-spər
An opaque, impure, Polycrystalline variety of Quartz that may be red, yellow, or brown
Jasper breaks with a smooth surface and can be highly polished like marble. Varieties of Jasper include fancy Jasper, poppy Jasper, red Jasper,and striped or banded Jasper. Jasper was once believed to have curative powers.