I specifically asked when I was considering buying this specimen if the color had been altered. The color of some rocks can be changed by heating them, putting them in a chemical bath, etc. I was assured by a reputable dealer that this color was the real deal. There are two different types of stones that share the name "jade". One is nephrite and the other jadeite. Blue Jade is a form of jadeite (hardness 6.5 - 7). By the way, my neighbor who is a real rock hound informed me that rock hounds never call a rock "a rock", it's a mineral. So I'll try to be better in my nominclature but I may lapse until it becomes ingrained (so to speak).