Assertion: red beryl | /r/HasProperty | formed
Facets:
value: by crystallizing under low pressure
type: CAUSE
Source sentences:
text: The red beryls were formed from silica-rich volcanic fluids in the western United States.
text: It is formed by crystallizing under low pressure and high temperature from a pneumatolytic phase along fractures or within near-surface miarolitic cavities of the rhyolite.