Smokey Quartz is named after its smokey color which is caused by gamma rays. The color of Smokey Quartz is variable from brown to black and sometimes smoky gray. Sunglasses, in the form of flat panes of smoky quartz, were used in China in the 12th century.
Smokey Quartz is nature's stone of endurance. If you need an extra boost, carry a Smokey Quartz gemstone with you. It is said to enhances organizational skills and is good to have around in the workplace or home office.
Mined in Brazil.
Mohs Hardness 7.