Large Smoky Quartz Sphere

Natural Quartz crystal  About 100mm Weighs about 3.5lbs Smoky Quartz sphere filled with glittering veil inclusions. Crystal Tip: Smoky quartz is a color-variety of crystalline quartz. It ranges from a light yellowish brown to a brown that is so dark that it appears to be black. Less-desirable specimens have a grayish brown color. When cut as a gem, stones with an orangish brown to a reddish brown  are preferred by many people. Smoky quartz is a relatively inexpensive gem material because it is abundant and found in many locations. It is often found in large crystals of excellent transparency with few inclusions. The color of smoky quartz is produced when natural radiation, emitted from the surrounding rock, activates color centers around aluminum impurities within the crystalline quartz.