sardonyx

• Разновидность драгоценного камня оникса, характеризующаяся чередующимися параллельными полосами сердолика (красновато-коричневого халцедона) и другого минерала, обычно белого или чёрного халцедона.

A gemstone variety of onyx featuring alternating parallel bands of sard (a reddish-brown chalcedony) and another mineral, typically white or black chalcedony.

1. A type of gemstoneC1formal

   A gemstone variety of onyx that features alternating parallel bands of sard (a reddish-brown chalcedony) and another mineral, often white or black.

   Сардоникс

   • The ancient ring was set with a beautifully carved sardonyx.
   • Sardonyx is often used in cameos due to its layered structure.
   • Collectors prize sardonyx for its distinctive striped appearance.