The English term “jade” is used to translate the Chinese word yu, which in fact refers to a number of minerals including nephrite, jadeite, serpentine and bowenite, while jade refers only to nephrite and jadeite. I have been to the jadeite market in Mandalay, Burma several times, and the color of yours looks more like Nephrite or Serpentine/Bowenite to me, but only a properly equipped gem lab will tell you for sure, try Guild lab, Stone Group Laboratories, IGI, GIA etc.
