Sphalerite   Commodore Mine, Creede, Colorado. Ex. Jim Turek collection. A nice face showing lots of crystals with variety in form. Many are twinned. As can be seen some are very translucent and yellow while most are darker. All have great luster. 6.1 x 4.8 x 3.3 cm. Minor chipping on contact edges.  Classic location. $40