Carnelian
Carnelian is an orange to reddish-brown translucent variety of chalcedony. Iron oxides give it its color. It has a hardness of 6.5 to 7 on the Mohs scale. Since antiquity it has been used for beads, seal stones and jewelry.
Carnelian is an orange to reddish-brown translucent variety of chalcedony. Iron oxides give it its color. It has a hardness of 6.5 to 7 on the Mohs scale. Since antiquity it has been used for beads, seal stones and jewelry.