chrysoprase
Concise Oxford English Dictionary © 2008 Oxford University Press:
chrysoprase /ˈkrɪsə(ʊ)preɪz/
▶noun an apple-green gemstone consisting of a variety of chalcedony that contains nickel.
– origin ME: from OFr. crisopace, via L. from Gk khrusoprasos, from khrusos ‘gold’ + prason ‘leek’.
'chrysoprase' also found in these Oxford entries:

