Sapphires

Information and history of sapphires used in cameo carving and as decorative elements to cameos and intaglios.

Sapphire is one of the two gem-varieties of corundum, the other being ruby (defined as corundum in a shade of red). Although blue is the best-known sapphire color, they occur in other colors, including gray and black, and they can be colorless. A pinkish orange variety of sapphire is called padparadscha. Reference: Wikipedia

The Romans were experts at cameo carvings and there are examples of carved sapphire cameos dating from the 1st century.