Assertion: pure quartz | /r/Synonym | rock crystal
Facets:
value: traditionally
type: OTHER
Source sentences:
text: Pure quartz, traditionally called rock crystal (sometimes called clear quartz), is colorless and transparent or translucent.
text: Pure quartz, traditionally called rock crystal or clear quartz, is colorless and transparent or translucent, and has often been used for hardstone carvings, such as the Lothair Crystal.