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Name:The name is derived from its occurrence at the Achates River in southwestern Sicily.
A variety of Chalcedony

A distinctly banded variety of Chalcedony.
Originally reported from Dirillo river (Achates river), Acate, Ragusa Province, Sicily, Italy.

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Classification of Agate

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Chemical Properties of Agate

Simplified for copy/paste:SiO2
Essential elements:O, Si
All elements listed in formula:O, Si

Other Names for Agate

AchatesOriental Agate
Other Languages:
French:Agate grossière
Agate orientale
Agate périgone
Agate rubanée
Agate Versiclore
Agate zonaire
Latin:Achates vix pellucida, nebulosa, colore griseo mixto
Agathe vixpellucida nebulosa colgriseo ore mixta
Simplified Chinese:玛瑙
Abakusz-köAgate-JasperAgatized coralBlue Lace AgateBotswana Agate
Brecciated AgateCloud AgateCrazy Lace AgateEnhydro AgateEye Agate
Fairburn AgateFortification AgateFossil AgateHaema-ovoid-agatesHerbeckite
Iris AgateLaguna AgateLake Superior AgateMexican Lace AgateMocha Stone
Nipomo AgateOnyxPigeon Blood AgatePlume AgateRiband Agate
SardonyxSnakeskin AgateVogelaugenachatYoungite

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.

References for Agate

Reference List:

- +
Götze, J., Plötze, M., Fuchs, H., and Habermann, D. (1999) Defect structure and luminescence behavior of agate - results of electron paramagnetic resonance (EPR) and cathodoluminescence (CL) studies. Mineralogical Magazine: 63: 149-163.

Carlson, M.R. (2002) The Beauty of Banded Agates. Edina: Fortification Press.

Zenz, J. (2005): Achate. Bode Verlag, 656 pp. (in German).

Zenz, J. (2009): Achate II. Bode Verlag, 656 pp. (in German).

Moxon, T. (2009): Studies on Agate: Microscopy, Spectroscopy, Growth, High Temperature and Possible Origin. Terra Publications, Doncaster, UK, 96 pp.

extraLapis No. 39 (2010): Achate - geboren aus Vulkanen. Chr. Weise Verlag, Munich, Germany, 98 pp. (in German).

Mindat.org articles about Agate

Article entries:
Book Review - Agates IIJolyon & Katya Ralph
Wonderful World of Agates, WisconsinDavid Von Bargen

Internet Links for Agate

Search Engines:
  • Look for Agate on Google
  • Look for Agate images on Google
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  • The Arkenstone - Fine Minerals
  • Buy from McDougall Minerals
  • Fabre Minerals - search for Agate specimens
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  • Mineral Classics - Worldwide Collector Quality Minerals and Gems
  • DAKOTA MATRIX offers Cabinet and Rare Species from Worldwide Localities.
  • SpiriferMinerals.com - high quality low prices
  • Search for Agate on Well-Arranged Molecules
  • Top quality minerals from Kristalle of California
  • Specimens:The following Agate specimens are currently listed for sale on minfind.com.

    Localities for Agate

    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.
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