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Gem Silica

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Medium blue occasionally with a tinge of green from other minerals
Vitreous, Sub-Vitreous, Resinous
5½ - 6½
A gem name for a chalcedony coloured by chrysocolla.

Visit for gemological information about Gem Silica.

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Pronounciation of Gem SilicaHide

PlayRecorded byCountry
Jolyon & Katya RalphUnited Kingdom

Physical Properties of Gem SilicaHide

Vitreous, Sub-Vitreous, Resinous
Takes a high polish
Medium blue occasionally with a tinge of green from other minerals
5½ - 6½ on Mohs scale
None Observed
Conchoidal, Sub-Conchoidal

Common AssociatesHide

ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Associated Minerals Based on Photo Data:
Malachite4 photos of Gem Silica associated with Malachite on
Quartz1 photo of Gem Silica associated with Quartz on

Other InformationHide

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 SilicaHide

Localities for Gem SilicaHide

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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
  • 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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