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A variety of Agate

A variety of Agate with reddish-brown and either black or white bands.

Visit for gemological information about Sardonyx.

Classification of Sardonyx

Chemical Properties of Sardonyx

Elements listed in formula:

Other Names for Sardonyx

Name in Other Languages:
Simplified Chinese:缠丝玛瑙

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.

Internet Links for Sardonyx URL:
Please feel free to link to this page.

Localities for Sardonyx

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.
  • Xinjiang Autonomous Region
    • Hami Prefecture (Kumul Prefecture; Qumul Prefecture)
      • Yiwu Co. (Aratürük Co.)
        • Naomaohu
Yanling Tang (2005): Non-metallic deposits of Xinjiang, China [Zhongguo Xinjiang Fei Jinshu Kuangchuang]. Geological Publishing House (Beijing), 289 pp.
Czech Republic
  • Bohemia (Böhmen; Boehmen)
    • Liberec Region
      • Jizerské Mtn (Iser Mtn)
geological prospecting, 2008 - 2009, Czech geological Organization
  • Madhya Pradesh
    • Jabalpur Division
Richard M. Pearl: "Minerals of India", Mineral Digest, vol. 2.
  • Alabama
    • Blount Co.
Mineralogy of Alabama Geol Surv Ala. Bull 120
Gems and Minerals of America- Jay Ellis Ransom-1974
  • Arizona
    • Mohave Co.
      • Black Mts
        • Oatman District (San Francisco District; Union Pass District)
Blair, 1992. Rockhounding Arizona.
    • Yuma Co.
Blair, 1992. Rockhounding Arizona, p.157.
  • Colorado
    • Grand Co.
Minerals of Colorado (1997) E.B. Eckels
  • Connecticut
    • Litchfield Co.
      • Torrington
Orcutt, Rev. Samuel. (1878), History of Torrington, Connecticut. J. Munsell, Albany: 174-179.
  • Florida
    • Hillsborough Co.
      • Tampa
        • Tampa Bay
Zeitner (1968) Appalachian Gem Trails
  • New Jersey
Gems and Minerals of America -Jay Ellis Ransom-1974
Gems and Minerals of America - Jay Ellis Ransom-1974
  • North Carolina
Gems and Minerals of America- Jay Ellis Ransom-1974
Gems and Minerals of America-Jay Ellis Ranson-1974
Zeitner,J.C.,1968,Appalachian mineral and gem trails,Lapidary Journal
  • Rhode Island
    • Providence Co.
      • Cumberland
AmMIn 11:334-340
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