Assertion: mineral's color | /r/HasProperty | due
Facets:
value: predominantly
type: DEGREE
value: to the element chromium
type: CAUSE
Source sentences:
text: Recent X-ray diffraction studies suggest that the color is due to thin microscopic fibers of possibly dumortierite within the quartz.
text: The color of a ruby is due to the element chromium.
text: The color of fetid fluorite is predominantly due to the calcium atoms remaining.