Gorgeous Natural Carnelian Agate Polished Pebble from Madagascar. Stone measures approx. 1.80" x 1.40" x .95" and weighs approx. 47.8 grams

Agate is one of the most common materials used in the art of hardstone carving, and has been found in many ancient sites across the world. Modern day uses of agate exploit its hardness, ability to retain a highly polished surface finish and resistance to chemical attack. Agate is a cryptocrystalline variety of silica, chiefly chalcedony, and is characterized by its fineness of grain and brightness of color. Although agates may be found in various kinds of rock, they are classically associated with volcanic rocks and can be common in certain metamorphic rocks.