Sardonyx
Varietal name for reddish-brown agate with black and/or white bands, a combination of sard for color and onyx, see onyx. This name was hardly used…
Tag: sardonyx
Onyx / onyx marble
In correct usage, the name onyx refers to a black and white banded agate, a variety of chalcedony. In addition to black and white onyx,…
Carnelian
Variety name for orange-red to reddish-brown chalcedony. Usually translucent and without bands. A banded chalcedony is usually called agate, but we see orange-red banded agate…
Banded agate
Designation for reddish-brown agate with black and/or white bands, used particularly for the recently marketed polished stones from Madagascar. These large hand stones or “jumbo”…
Agate
Name for a distinctly striped or banded chalcedony. Originally found in the river Dirillo (formerly Achates) in Sicily, Italy, from which the name is derived.…
