Glossary Blog » jewelry glossary

1. A cartouche is a symmetrical ornamental tablet used in decoration or in engraving. 2. In horology, a porcelain plaque for a clock or a watch dial numeral. 3. A conventional figure, usually symmetrical, enclosing a maker's mark.

Carnelian is a reddish-brown, orange-brown, or yellow-brown variety of Chalcedony. Used in inexpensive jewelry and carved Chinese objects. The color is caused by iron oxide.  

Carbon is an element. Diamond, graphite, and carbon black are all carbon; the carbonates, like calcite, contain some carbon in combination with other elements.

The word carat comes from the seed of the carob tree, the biblical locust...