Assertion: pyrite's color | /r/HasProperty | derived
Facets:
value: from chromium
type: OTHER
value: mainly
type: DEGREE
value: from the presence of lazurite
type: OTHER
Source sentences:
text: The color of many gemstones is derived from trace amounts of chromium.
text: The red color of rubies, the pink of some sapphires, and the green color of emeralds are derived from chromium.
text: The blue color of lapis lazuli is mainly derived from the presence of lazurite, a blue silicate mineral of the sodalite group with a chemical composition of (Na,Ca) 8 (AlSiO 4 ) 6 (S,Cl,SO 4 ,OH) 2 .