This is Chrysocolla at it's finest. As you look at my site, you will find more and more of best Minerals in the world This nice piece of Chrysocolla is first of all "A" grade at its best. It weighs in about 1 lb. 6+ oz, and is very very workable. It is about 3-1/2'' x 3'' x 2-1/2'' or more. Rough measurements with your benifit of the doubt. The vein of Chroysocolla you see is about 5/7'' thick at the top, and carries all the way through. Would make some of the best cab's in the world. Thanks for your interest