|Smoky Quartz Gemstone Information
Information * Loose gemstones * Jewelry links
Smoky Quartz was often used for Victorian mourning jewelry. It is named cairngorm after the mountains in Scotland where it is found to be brown to black in color. The color comes from natural radiation exposure. Smoky quartz is also found in the Swiss Alps where different altitudes produce different colors and tones.
ENHANCEMENT CODE E
Click to view AGTA code.
Refractive Index 1.544-1.533
Hardness = 7 (Moh's Scale)
Specific Gravity =2.66
Species - Quartz
Optic Character - Double Refraction.
WARNINGS FOR CARE
Ultrasonic: Usually safe
Heat: Poor; color change may occur with heat; may fracture under abrupt temperature changes
Chemicals that harm: Hydrofluoric acid, ammonium fluoride.
Crystal system: Hexagonal (trigonal), compact.
Brazil, Madagascar, Sri Lanka, South Africa, Uruguay
|November||Topaz or Citrine|
|December||Blue Topaz or Zircon|
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