Drusy Quartz

saf-ahyuh r

The word "drusy," is a mineralogical term used as both a noun and an adjective. The noun refers to a mineral coating of thin layers of tiny, tightly-packed crystals that resemble glittering sugar granules. The adjective refers to any such granulated crystal layers in reference to a given mineral; in this case, drusy quartz. Drusy quartz is usually found in the inside of geodes. When fashioned into loose gemstones and jewelry, it is often coated with a metallic color to capitalize on the glittering natural crystal facets and give it a more bold appearance.

Drusy Quartz Polished
Drusy Quartz Classification
Common Name Drusy Quartz
Species Quartz
Drusy Quartz Optical Properties
Transparency Translucent - Opaque
Refractive Index 1.544-1.553
Tolerance:very constant
Optic Character Uniaxial
Optic Sign Positive
Polariscope Reaction Aggregate (AGG), Doubly Refractive (DR)
Pleochroism None
Drusy Quartz Characteristic Physical Properties
Hardness 7
Toughness Varies
Inclusions Drusy quartz is often treated by means of CVD to give a metallic luster and range of colors.
Luster Vitreous, Metallic
Fracture Conchoidal
Cleavage None
Drusy Quartz Chemistry & Crystallography
Chemical Name silicon dioxide (aka silica)
Chemical Formula SiO2
Crystal System Trigonal
Chemistry Classification Silicate

Drusy Quartz Colors

  • Bi-color Drusy Quartz Bi-color
  • Yellow Drusy Quartz Yellow
  • White Drusy Quartz White
  • Red Drusy Quartz Red
  • Purple Drusy Quartz Purple
  • Pink Drusy Quartz Pink
  • Orange Drusy Quartz Orange
  • Multi-color Drusy Quartz Multi-color
  • Green Drusy Quartz Green
  • Gray Drusy Quartz Gray
  • Colorless Drusy Quartz Colorless
  • Brown Drusy Quartz Brown
  • Blue Drusy Quartz Blue
  • Black Drusy Quartz Black

Alternate Names

Druse Quartz, Druzy Quartz

Countries of Origin

United States of America (the); Unknown; Uruguay; China; Brazil; Nepal; India; Indonesia

History

Whether you choose a pendant or earrings or even a ring, drusy stones take advantage of the natural way quartz crystals form. Over time, water deposits mineral crystals onto the quartz and drusy quartz is born! These tiny crystals can be set in jewelry without faceting or almost any treatment at all. Savvy designers take advantage of drusy's many reflective surfaces in their creations. Drusy stones may be set in their natural state. They may also be dyed or color-enhanced to improve the marvelous effects of mother nature.

Care

Treat your drusy stones with care. When you must clean them, a gentle rinse with warm water should be sufficient. Air dry thoroughly and store with care.

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Tim Matthews

Author

Tim Matthews

Tim Matthews is President and Chief Executive Officer of Jewelry Television® (JTV), as well as a member of the company's Board of Directors. He oversees and leads all aspects of the company's powerful omni-digital retail platform that uniquely specializes in fine jewelry and gemstones. His passion for business and gemstones has led him to become a recognized expert in the field of gemology. He is a life member of the Gemmological Association of Great Britain (Gem-A) and has earned Gem-A's highest degrees, the Gemmology (FGA) and Diamond (DGA) diplomas. He is also a Graduate Gemologist (GG) of the Gemological Institute of America (GIA) and has also completed GIA's Graduate Diplomas in Diamonds, Colored Stones and Pearls. Under his leadership, JTV has become the leader in the sourcing and selling of color gemstones and jewelry.

This page was created on June 27, 2014.

This page was last edited on October 24, 2019.