Matte carnelian is polished and then tumbled to create a non-shiny finish that gives it a more natural appearance. Carnelian is a translucent chalcedony or an A-grade agate that receives its beautiful red tints from iron oxides. It is also known as the Mecca stone. Most deep red carnelian is heat treated to darken the material evenly. It is similar to sard, but is lighter in color and not as hard. It has a Mohs hardness of 6.5.
Historically, carnelian has been used both in jewelry and in carvings. Often known as a motivation stone, carnelian is used for physical training and balancing body energy levels.