The best-known and generally least expensive variety of chalcedony is carnelian. It ranges in color from yellow-orange to rich, near reddish orange, to orangey brown, and varies from semi-opaque to highly translucent. Iron is the source of its color and as a result it can be easily heat treated, (even by the sun’s heat alone,) to darken red tones as the iron is oxidized. You should assume, unless informed otherwise, that any piece of carnelian has been enhanced in this way.
It brings healing energy to the organs in the area of the lower body within the sacral chakra. It is excellent to combine with many of the high vibration crystal energy. Use Carnelian at the solar plexus or power chakra then add in Moldavite at the heart chakra or third eye.