Assertion: black chalcedony | /r/HasProperty | referred in the trade
Facets:
value: as mtorodite
type: OTHER
value: as mtorolite
type: OTHER
value: as chrome chalcedony
type: OTHER
Source sentences:
text: Natural green chalcedony colored by chromium is found in Zimbabwe, and is referred to in the trade as chrome chalcedony, mtorolite or mtorodite.