Chrysoprase is a beautiful green chalcedony colored by nickel that’s long been considered the most valuable of all the chalcedony hues. It is greatly admired in Asia where it is often considered jade, which it strongly resembles. Beautifully cut from quality Australian material and polished front and back, this high-domed cabochon weighs approx.. 3.12 ct. and measures about 9 x 5 mm. It will readily fit pre-made calibrated settings. It has a slightly curved bottom. Very nice even color. Chrysoprase is one of the Star Signs for Gemini (May 22-Jun. 21) and the birthstone for May. (All uses, No treatment).