Mindat Logo


This page is currently not sponsored. Click here to sponsor this page.

Name:Combination of "amethyst" and "citrine".
A variety of Quartz

Ametrine slab

Ametrine crystals are made of alternating sectors of purple and yellow to orange color. Slabs cut perpendicular to the c axis of the crystal look a bit like a pinwheel. The purple sectors are situated under the positive rhombohedral faces (r), and the yellow sectors under the negative rhombohedral faces (z).

While the purple sectors are made of amethyst, the yellow or orange sectors are not made of citrine, because they are colored by inclusions of iron compounds and would more properly called ferruginous quartz. Accordingly, upon heating ametrine the purple sectors pale, while the yellow-orange sectors keep their color.

Visit gemdat.org for gemological information about Ametrine. Currently in public beta-test.

Classification of Ametrine

mindat.org URL:http://www.mindat.org/min-7606.html
Please feel free to link to this page.

Other Names for Ametrine

Other Languages:

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 Ametrine

Reference List:

- +
Balitskii, V. S. & Balitskaya, O. V. (1986): The amethyst-citrine dichromatism in quartz and its origin. Physics and Chemistry of Minerals 13, 415-421.

Vasconcelos P, Wenk HR, Rossman GR (1994) The Anahí ametrine mine,
Bolivia. Gems and Gemology 30, 4-23.

Balitsky VS, Lu T, Rossman GR, Makhina IB, Mar'in, AA, Shigley JE, Elen S,
Dorogovin BA (1999) Russian synthetic ametrine. Gems and Gemology 35,

Balitsky, V. S.; Machina, I. B.; Mar'in, A. A.; Shigley, J. E.; Rossman, G. R.; Lu, T. (2000): Industrial growth, morphology and some properties of Bi-colored amethyst-citrine quartz (ametrine). Journal of Crystal Growth 212, 255-260.

Internet Links for Ametrine

Search Engines:
  • Look for Ametrine on Google
  • Look for Ametrine images on Google
  • Mineral Dealers:
  • Buy rare minerals from Excalibur Minerals
  • DAKOTA MATRIX offers Cabinet and Rare Species from Worldwide Localities.
  • Buy fine minerals and gemstones from Pala International
  • Mineral Classics - Worldwide Collector Quality Minerals and Gems
  • Buy from David K Joyce minerals
  • Fine Minerals from Weinrich Minerals, Inc.
  • rare and unusual minerals mainly crystallized
  • SpiriferMinerals.com - high quality low prices
  • Search for Ametrine on Well-Arranged Molecules
  • Rare and Unusual minerals at Mineralogical Research Company
  • High-end worldwide specimens & outstanding customer service
  • Buy from Dave Bunk Minerals
  • Specimens:The following Ametrine specimens are currently listed for sale on minfind.com.

    Localities for Ametrine

    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.
    (TL) indicates type locality. ? 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.
    • Santa Cruz Department
      • Sandoval Province
        • La Gaiba District
    • Ontario
      • Thunder Bay District
        • McTavish Township
    Ontario Gem Company
    • Andhra Pradesh
    • Zambezia Province
      • Alto Ligonha District
    Geotrade Bohemia
    South Africa
    • Mpumalanga Province
      • Nkangala District
        • Mkobola
    (Error for yellow iron-stained amethyst; not true ametrine.)
    • Nevada
      • Washoe Co.
        • Hallelujah Junction area
          • Petersen Mountain (Hallelujah Junction [sic])
    Rocks & Minerals 82:415-418
    Mineral and/or Locality  
    Search Google  
    Copyright © Jolyon Ralph and Ida Chau 1993-2014. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of thousands of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
    Current server date and time: November 7, 2014 09:35:39
    Mineral and Locality Search
    and/or Locality:
    Fade toolbar when not in focusFix toolbar to bottom of page
    Hide Social Media Links
    Slideshow frame delay seconds