Gemstone - Agate
Jasper is an opaque variety of Chalcedony, and is usually associated with brown, yellow, or reddish colors, but may be used to describe other opaque colors of Chalcedony such as dark or mottled green, orange, and black. Jasper is almost always multicolored, with unique color patterns and habits.
Jasper is known metaphysically as a stone of gentleness, comfort, and relaxation. When its protective energies are also considered, it's no wonder jasper is sometimes called the "nurturing stone."