Chrysoprase is chalcedony’s finest hour: translucent apple to spring green, colored by nickel rather than chromium — no other green gem glows quite this way. Australia’s Marlborough deposits set the standard. Hardness about 7; historically carved by everyone from the Greeks to Fabergé.Every chrysoprase at GEMIC Institute is natural, certified in our Siem Reap laboratory and photographed individually. Unique pieces; tracked worldwide shipping and a 30-day inspection period.