Assertion: chalcedony | /r/ObjectUse | used since ancient times
Facets:
value: in europe
type: LOCATION
value: widely
type: DEGREE
value: in cameos
type: LOCATION
value: because of relative abundance
type: CAUSE
value: in jewelry
type: LOCATION
value: in the middle east
type: LOCATION
value: because of suitability
type: CAUSE
Source sentences:
text: Because of its beauty, relative abundance and suitability for carving, chalcedony has been widely used in jewelry and cameos (carved above the surface) and intaglios (carved below the surface) since ancient times in Europe and the Middle East.