Assertion: onyx | /r/HasProperty | a form of agate
Facets:
value: technically
type: MANNER
Source sentences:
text: Onyx , when banded white and black, is technically a form of Agate, and Sardonyx , which is a banded reddish and white Chalcedony, is also technically a type of Agate.
text: Is Onyx a Type of Agate?