1 example sentence using chalcedony.
Chalcedony used in a sentence
Chalcedony in a sentence as a noun
Mass production would probably have to be more like finding a method to synthesize artificial minerals similar to nephrite, chalcedony, or carbonado. Perhaps slag wool, basalt fiber wool, ceramic fiber wool, or fiberglass wool, compressed into a felt, then impregnated with a noncrystalline material or polymer?
Chalcedony definitions
noun
a milky or greyish translucent to transparent quartz
See also: calcedony