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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.

Visit for gemological information about Agate.

Classification of Agate URL:
Please feel free to link to this page.

Chemical Properties of Agate

Essential elements:
All elements listed in formula:

Other Names for Agate

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.

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).

Internet Links for Agate

Localities for Agate

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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