Modern gold ring set with a flat translucent white calcedony intaglio, engraved with a standing Jupiter. |
The chert has sometimes the appearance of calcedony, and is finely striped. |
In the cavities of such mixed rocks we often find calcedony, and crystals of mesotype, stilbite, and arragonite. |
Small Calcedony semigeode with a crystalized cavity inside. |