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SMOKY QUARTZ

Smoky Quartz Origin & Physical Properties

Smoky Quartz is the name given to to Quartz crystals that are transparent to translucent with a smoky brown to grey color, sometimes yellowish-brown and less often nearly black. They form as crystals, druzy and in massive rock form. The colors are caused by natural irradiation that occurred after their formation and traces of aluminum that replaced silicon molecules within the crystal lattice. Smoky Quartz can only form in temperatures below 50 C, thus this process happened after the formation of the crystals, taking millions of years more of exposure to elevated levels of exposure to radiation from the host rocks where they occur.

Smoky Quartz is dichroic, meaning it shows a change of color from a yellow-brown to reddish brown when the two axis’s are exposed to a polarized light. Smoky Quartz is sometimes produced artificially by irradiating clear quartz with gamma rays. These artificially colored crystals often appear a more uniform darker color.

Some valuable varieties of Smoky Quartz include Brandberg Smoky Quartz from Namibia, which often merge with Amethyst colors, exhibit Skeletal growth patterns and contain enhydro pockets, phantoms and other rare formations.  Smoky Citrine Quartz is a variety of natural Citrine which usually occurs in a deep brown golden color, often with color banding. Morion, which is a more rare dark brown to black variety of Smoky Quartz which often occurs together with Dolomite.

QUARTZ: SMOKY GEMSTONE PROPERTIES

Category

Properties

 Chemical Composition

SiO2

 Mohs Hardness 

7

 Luster

Vitreous

 Specific Gravity  2.65
Refractive Index  1.54-1.55
 Fluorescence 

Dichroic: yellow-brown to lighter red-brown

 Crystal System

Hexagonal

 Diaphaneity

Transparent

 Color

 Light yellowish brown to dark smoky grey, black

 Origin

Brazil, India, Australia, Africa, U.S.A.

 Chakra

Root (1st), Crown (7th)

 Zodiac 

Capricorn, Sagittarius, Scorpio

 Element

Earth

 Metaphysical Effects

Protection, Meditation, Transformation, Confidence, Manifestation, Grounding

Smoky Quartz Metaphysical Properties

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Smoky Quartz History & Mythology