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Gem Silica

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Medium blue occasionally ...
Vitreous, Sub-Vitreous, Resinous
5½ - 6½
A gem name for a chalcedony coloured by chrysocolla.

Visit for gemological information about Gem Silica.

Classification of Gem Silica

Physical Properties of Gem Silica

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

Occurrences of Gem Silica

Relationship of Gem Silica to other Species

Other Information

Health Risks:
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 URL:
Please feel free to link to this page.

Localities for Gem Silica

This 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 for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? 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
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