Serpentine or Jade? 11

Serpentine 11" tall and sits flat. Solid and carvable.

Serpentine 11 " tall and sits flat. This specimen weighs a little over 25 Lbs. and measures about 11" x 9" x 4". Will fit in a Priority Mail Medium Flat Rate Box - $11.35 Bottom shows solid green color vs the Olive color seen in second picture. Solid and great for Carving. This specimen is very hard so it might be part jade as a knife will not scratch the bottom.