A variety of carnelian, of a rich reddish yellow or brownish red color. See the Note under Chalcedony.

A semi precious stone that is related to Carnelian and has a brown red color. It was once used extensively for seals and was carved using the Intaglio technique. Sard was named for Sardis, the ancient capital of Lydia.

Sard is a semi-precious stone related to carnelian. This brownish-red, opaque gemstone was once used extensively for seals and was carved using intaglio. Sard was named for Sardis, the ancient capital of Lydia. Sardius is mentioned in the Bible, and may refer to jasper.

A deep orange-red to brownish-red variety of chalcedony.

Sard is a reddish-brown chalcedony, SiO2, much used by the ancients as a gemstone. Pliny the Elder states that it was named from Sardis, in Lydia, where it was first discovered; but the name probably came with the stone from Persia (Pers. sered, yellowish-red). Sard was used for Assyrian cylinder-seals, Egyptian and Phoenician scarabs, and early Greek and Etruscan gems.