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,…
Tag: onyx
Mexican Onyx
Commercial name for a greenish-brown banded variety of calcite or stalagmitic limestone with patterns similar to those of true onyx (black and white banded variety…
Educational live session on agate
Recording of an educational live session for mineral and gemstone enthusiasts from my community. This session is about agate, a banded variety of chalcedony that…
