Carnelian is a translucent form of silica (SiO2) mineral chalcedony that is a variety of quartz. The stone ranges in color from yellow to a deep red. The finest specimens are from Brazil, India, and Arabia.
The ancient people highly valued the blood red variety, which they used beautiful engravings and seals. Currently it is used in jewelry. Red carnelian is used to stop hemorrhages, nosebleeds, and to purify the blood. (see Gem Healing) A.G.H.