Assertion: chrysoprase | /r/HasProperty | a variety of chalcedony
Facets:
Source sentences:
text: Chrysoprase is a variety of Chalcedony, a member of the quartz family.
text: Chrysoprase is a variety of chalcedony, usually black or leek-green in color.
text: Chrysoprase is a green member of the quartz family, and is a variety of chalcedony.
text: An unusual and eye-catching gemstone, chrysoprase is a variety of chalcedony with inclusions of nickel-bearing minerals that impart bright green hues.