Chrysoprase
Chrysoprase , noun
[Old English crisopace, Old French crisoprace, French chrysoprase, Latin chrysoprasus, from Greek {not transcribed}; chryso`s gold + {not transcribed} leek.]
(Mineralogy) An apple-green variety of chalcedony, colored by nickel. It has a dull flinty luster, and is sometimes used in jewelry.