Smoky Quartz is a variety of Quartz, a silicon dioxide mineral with a hardness of 7. Like other Quartz crystals, Smoky Quartz has a hexagonal (trigonal) crystal system and forms in prisms. Smoky Quartz can vary in color from very pale tan to deep chocolate brown. Its color comes from natural irradiation. Clear Quartz can be made Smoky artificially by treating it with radium or x-rays.
Smoky Quartz is one of the premier grounding stones. It can help even the ‘spaciest’ individuals get their ‘land legs’ so they can fully function as physical beings. When one is working in the higher realms, activating the upper chakras in the body and aligning them with the nonphysical chakras above the head, Smoky Quartz can help one come back to the body and the physical world. It also facilitates the grounding of spiritual information, making it possible to do something practical and beneficial with the insights one receives in the rarefied atmosphere of the higher vibrational planes. Smoky Quartz enhances practicality and organization. It is a good stone to have nearby when one is balancing the checkbook or doing the taxes. It lends focus to students and patience to teachers. It can also help one to avoid extravagance, except when it comes to purchasing Smoky Quartz! Smoky Quartz offers protection from negative energies in one’s environment. It can absorb and transmute almost unlimited amounts of negativity by grounding it in the Earth, where it can be neutralized. It is a good stone for ‘keeping things clear’ by purging the atmosphere of unspoken resentments or suppressed conflicts. One can pick up a Smoky Quartz when one is in a very bad mood, and a few minutes later one may wonder where the mood went! Because Smoky Quartz pulls in negativity so easily, even though most of it is grounded in the Earth, it is still a good idea to energetically cleanse the stone on a regular basis.
Simmons, Robert; Ahsian, Naisha. The Book of Stones, Revised Edition: Who They Are and What They Teach (several pages). North Atlantic Books. Kindle Edition.