To start, the quality of these quartz crystals is just fabulous. The large, fat crystal is perfectly symmetrical, sharp as a razor and clear as glass. Near is termination is intergrown a more slender, DOUBLY-TERMINATED crystal. The beautiful inclusions that make this specimen so interesting are a reddish chlorite (with a bit of green chlorite as well) and, here and there, some clay. The way these crystals sit up naturally on the underside contact face is a piece of luck - very aesthetic!