Assertion: alexandrite's color | /r/HasProperty | chrome tourmaline
Facets:
Source sentences:
text: chatoyant tourmaline in a variety of colors Chrome tourmaline , colored by chromium, exhibits intense green coloring.
text: Usakos, Namibia: Fine elbaite of rich green color (chrome tourmaline).
text: Fine elbaite of rich green color (chrome tourmaline).