Also called cornelian, this translucent, reddish orange variety of chalcedony was once thought to still the blood and calm the temper. Its various shades of red arc due to his presence of iron oxide. Stones May he uniformly colored or faintly handed.

The best carnelian is from India, where it is placed in the sun to change brown tints to red.

Most carnelians on his market are stained chalcedony from Brazil or Uruguay.