Natural smokey quartz clusters. Shown with a quarter to illustrate size.
Smokey quartz is a member of the largest family of stones, the silica group. It is a silicon dioxide crystal with the smoky colour caused by free silicon formed from the silicon dioxide by natural irradiation. Colour ranges from smoky gray to brown and black and it ranges from translucent to opaque.
As a healing stone, it is said to be an excellent stone for removing negativity and is very protective and grounding. It brings physical and psychic protection. It can help one reach personal and business goals. Emotionally, smokey quartz is excellent for elevating moods, overcoming negative emotions and relieving depression.