Interesting and well preserved natural pocket of a solid rind of Shattuckite. The external massive and textural form of a silky sky blue to turquoise layer of Shattuckite gives way to the internal preserved cavity of a velvety coating of powder blue Shattuckite. This is highlighted by contrasting tiny isolated spheres, up to 2 mm, of a second growth of royal blue spheres. A very captivating aesthetic!