Note: Do not rely on this information. It is very old.
Carnelian
Carnelian (from the Latin caro, carnis, flesh) is a common translucent red or brownish-red variety of chalcedony (q.v.) with a somewhat waxy lustre, distinguishing it from the duller, more horn-like sard (q.v.). It is much used by engravers for seals and also for "pebble" brooches.