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Aventurine

Aventurine Quartz Rough.
Aventurine Quartz Rough.

Aventurine quartz gets its color from small, included reflective crystals and results from the nature of the inclusions. Green has platy green fuchsite mica inclusions, brown comes from pyrite, and greenish brown is attributed to the mineral goethite. Other varieties in bluish and orange hues also occur. Confusion with aventurine feldspar, amazonite, and jade is possible. Aventurine quartz is commonly found in Brazil, India, Russia, the U.S., Japan, and Tanzania.

Gemological Information for Aventurine

Color:Translucent to Opaque Green (Most Common), Blue, Gray, Yellow and Brown with Aventurescence
Crystal Structure:Trigonal
Refractive Index:1.544-1.553
Durability:7
Hardness:Very Durable
Family:Quartz
Similar Stones:
Treatments:Dyeing
Country of Origin:Worldwide Deposits

Aventurine Care

Ultrasonic Cleaning:Usually Safe
Steam Cleaning:Usually Safe
Warm Soapy Water:Safe
Chemical Attack:Avoid
Light Sensitivity:May Fade
Heat Sensitivity:May Change Color

Sources

  • Gem Reference Guide, Los Angeles: Gemological Institute of America, 1988.
  • Hall, Cally. Gemstones, Smithsonian Handbooks. London, DK Penguin Random House, 2021.
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