Assertion: carnelian's color | /r/HasProperty | due
Facets:
value: to the element chromium
type: CAUSE
value: to iron(iii) inclusions
type: CAUSE
Source sentences:
text: The common red color is due to iron(III) inclusions.
text: Recent X-ray diffraction studies suggest that the color is due to thin microscopic fibers of possibly dumortierite within the quartz.
text: Psilomelane chalcedony - chalcedony with black bands, the color of which are due to the presence of psilomelane, from Mexico.
text: The color of a ruby is due to the element chromium.
text: The intense blue color is due to the presence of the trisulfur radical anion (S