Assertion: chrysoprase | /r/MadeOf | small quantities of nickel
Facets:
Source sentences:
text: Chrysoprase: is a gemstone variety of chalcedony (fibrous form of quartz) that contains small quantities of nickel.
text: Chrysoprase: is a gemstone variety of chalcedony (fibrous form of quartz) that contains small quantities of nickel.
text: Chrysoprase, chrysophrase or chrysoprasus is a gemstone variety of chalcedony (a cryptocrystalline form of silica) that contains small quantities of nickel.