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Gem Silica

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Colour:Medium blue occasionally ...Hardness:5½ - 6½

A gem name for a chalcedony coloured by chrysocolla.

Visit gemdat.org for gemological information about Gem Silica. Currently in public beta-test.

Classification of Gem Silica

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Occurrences of Gem Silica

Geological Setting:Veins in copper ore deposits

Physical Properties of Gem Silica

Lustre:Vitreous, Sub-Vitreous, Resinous
Diaphaneity (Transparency):Translucent
Comment:Takes a high polish
Colour:Medium blue occasionally with a tinge of green from other minerals
Hardness (Mohs):5½ - 6½
Cleavage:None Observed
Fracture:Conchoidal, Sub-Conchoidal

Relationship of Gem Silica to other Species

Common Associates:

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Industrial Uses:Gem material

Internet Links for Gem Silica

Search Engines:
  • Look for Gem Silica on Google
  • Look for Gem Silica images on Google
  • Mineral Dealers:
  • The Arkenstone - Fine Minerals
  • Wilensky Fine Minerals
  • SpiriferMinerals.com - high quality low prices
  • Buy RARE Minerals from Rocks of Africa
  • Fine Minerals from Weinrich Minerals, Inc.
  • Fine and rare minerals from mintreasure.com
  • Find Gem Silica on www.crystalclassics.co.uk
  • Mineral Classics - Worldwide Collector Quality Minerals and Gems
  • Buy from Dave Bunk Minerals
  • Fabre Minerals - search for Gem Silica specimens
  • Buy fine minerals and gemstones from Pala International
  • Search for Gem Silica on Well-Arranged Molecules
  • Localities for Gem Silica

    The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    • Arizona
      • Gila Co.
        • Globe-Miami District
          • Miami-Inspiration District
            • Inspiration
              • Miami-Inspiration deposit
                • Inspiration Mine
    Brian Cowger
      • Greenlee Co.
        • Shannon Mts
          • Copper Mountain District (Clifton-Morenci District)
            • Morenci
    Brian Cowger
      • Pinal Co.
        • Dripping Spring Mts
          • Mineral Creek District (Ray District)
            • Scott Mountain area
    Chris Boyd
    Mineral and/or Locality  
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    Copyright © Jolyon Ralph and Ida Chau 1993-2014. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of thousands of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
    Current server date and time: December 17, 2014 13:12:46
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