Assertion: obsidian's color | /r/CapableOf | fade to greyish or greenish white
Facets:
value: quickly
type: MANNER
Source sentences:
text: When hackmanite from Mont Saint-Hilaire (Quebec) or Ilímaussaq (Greenland) is freshly quarried, it is generally pale to deep violet but the color fades quickly to greyish or greenish white.