Assertion: pure beryl | /r/HasProperty | colorless
Facets:
Source sentences:
text: Pure beryl is actually colorless; the various colors occur from the presence of impurities, such as chromium and vanadium (emerald), iron (aquamarine, golden beryl) and manganese (morganite, red beryl).
text: Pure beryl is colorless goshenite.
text: Pure beryl is colorless, but it is frequently tinted by impurities; possible colors are green, blue, yellow, and red (the rarest).
text: Pure beryl is colorless goshenite.