Assertion: peridot | /r/ObjectUse | used as official birthstone
Facets:
value: for those
type: TRANSITIVE-OBJECT
value: since the early 20th century
type: TEMPORAL
value: in the united states
type: LOCATION
Source sentences:
text: Since the early 20th century, peridot has been used as the official birthstone in the United States for those born in August.