Assertion: chalcedony | /r/HasProperty | a type of quartz
Facets:
Source sentences:
text: As chalcedony is a type of quartz, and quartz is the second most abundant mineral in the continental crust of the Earth, it is relatively inexpensive.
text: (Both chalcedony and jasper are forms of quartz.)
text: Chalcedony is a form of quartz crystal.
text: Remember, chalcedony is a really broad umbrella term, and there are numerous types of quartz which can potentially fall under it.
text: Likely the most identifiable of the semi-precious gemstones found in Iowa, chalcedony is a type of quartz.