Assertion: boulder opal | /r/HasAspect | tendency
Facets:
Source sentences:
text: Boulder Opal has a tendency to cleave; when cleaved the "split" leaves two faces of opal, with a naturally polished face.is a transparent to translucent opal, with warm body colors of yellow to orange to red.
text: Boulder Opal has a tendency to cleave; when cleaved the “split” leaves two faces of opal, with a naturally polished face.
text: Boulder Opal has a tendency to cleave; when cleaved the “split” leaves two faces of opal, with a naturally polished face.