This smokey quartz is from the Diamond Hill Quartz Mine in Antreville, Abbeville County, South Carolina, USA. This mine contains several varieties of quartz crystals including smokey. This is a double terminated Dauphine Law twinned crystal. It translucent with zones of light to dark smokey quartz. The crystal was a secondary deposit on a vein of milky quartz and the rear shows traces of the former attachment point (photo 7). This crystal measures 3 1/4 x 1 5/8 x 1 1/4 inches or 82 x 41 x 32 mm.