Smoky quartz or smokey quartz is a brown to black variety of quartz caused through the natural (or artificial) irradiation of aluminium-containing rock crystal. It is sometimes used for unusual faceted cuts.

The commercial market is limited, because there is a rather limited demand for brown gemstones. This variety was sometimes known as smoky topaz in the past, though the term is incorrect and misleading.

Discount smoky quartz has two varieties. A very dark brown to black opaque variety is known as morion. Morion is the German, Danish, Spanish and Polish synonym for cheap smoky quartz. Cairngorm is a variety of smoky quartz crystal found in the Cairngorm Mountains of Scotland. It usually has a smoky yellow-brown color, though some specimens are a grey-brown.

Like other quartz gems, handmade smoky quartz is a silicon dioxide crystal, with a small amount of ferric oxide impurity which gives it the characteristic color. China Smoky quartz is mainly used in Scottish jewelry and as a decoration on kilt pin.

Natural fashion smoky quartz comes from many sources around the world. A few of the more noteworthy locations include Brazil, the world's largest supplier; Pikes Peak area of Colorado, USA, where it is associated with green amazonite; and the Swiss Alps, which has produced many tons of fine specimens.

Smokey quartz is associated with magical and healing qualities. It is believed that smokey quartz is nature's stone of endurance. It promotes personal pride and joy in living, creativity in business and opens the path for perception and learning.

Additionally smokey quartz is said to be a protection stone that cleanses and clears negative energy. As a grounding stone, Smokey quartz transmutes negative energies and facilitates your ability to get things done in the practical world. It enhances organizational skills and is good to have around in the workplace or home office.