Assertion: agate | /r/ObjectUse | used as ornamental
Facets:
value: for thousands of years
type: TEMPORAL
Source sentences:
text: Agate is a common semiprecious silica mineral that has long been used as a gem and ornamental.
text: Agate has been used as gemstones and other ornamental objects for thousands of years.
text: Agate is a common semiprecious silica mineral that has long been used as a gem and ornamental.