I really like the hemispheric, sculpted quality of this copper specimen, which is composed of intergrown crystals. At the lower left corner is an exquisite spinel twin, measuring 1.0 cm across. The symmetry of the curved shape has a very calming and eye appealing effect on the viewer. Chuck Youngblood owned a rock and jewelry shop in Bisbee for decades and sold his personal Bisbee collection to the Stoudts some years ago, 1998..