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Herkimer Diamond

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Name:After the localities, mostly in Herkimer County, New York, USA.
A variety of Quartz

Clear, doubly-terminated, highly lustrous Quartz crystals from Herkimer Co., New York, and surrounding area, USA. There are similar terms for quartz crystals from other locales. The variety status is derived from the rather unique appearance (morphology) of these crystals, associated with the locality.

Herkimer diamonds are a variety of quartz crystals from Herkimer, Co. New York that have been popular with collectors for more than 100 years and various localities for them in Herkimer Co. are still producing many specimens each year even though it requires a lot of hard manual labor to find good examples. They are frequently doubly terminated with prism faces about as prominent as the pyramidal terminations.

A number of other localities produce Herkimer like quartz crystals, but few if any of them can produce crystals that match the perfection, luster and transparency of the best Herkimer diamonds.

People selling Herkimer like quartz crystals from other localities often try and trade on the name by calling their quartz Herkimer quartz or Herkimer diamonds.

Of course this irritates the collectors of real Herkimer quartz and they will assert that Herkimer diamonds only come from the area around Herkimer Co., New York. Sort of like certain French people insisting that the only Champagne comes only from a particular region of France.
[Rock Currier 2013]

Classification of Herkimer Diamond

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Other Names for Herkimer Diamond

Little Falls DiamondMiddleville Diamond
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.

Mindat.org articles about Herkimer Diamond

Article entries:
A Great Herkimer Diamond FindCharles Snider
Politics of the Herkimer DiamondCharles Snider

Internet Links for Herkimer Diamond

Search Engines:
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  • Mineral Classics - Worldwide Collector Quality Minerals and Gems
  • Search for Herkimer Diamond on Well-Arranged Molecules
  • Buy from David K Joyce minerals
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  • Lapis Mineral Magazin
  • DAKOTA MATRIX offers Cabinet and Rare Species from Worldwide Localities.
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  • Rare and Unusual minerals at Mineralogical Research Company
  • High-end worldwide specimens & outstanding customer service
  • Fine Minerals from Weinrich Minerals, Inc.
  • Specimens:The following Herkimer Diamond specimens are currently listed for sale on minfind.com.

    Localities for Herkimer Diamond

    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.
    • Ontario
      • Carleton Co.
        • Osgoode Township
    Michael Bainbridge Collection
    • New York
      • Fulton Co.
        • Town of Ephratah
          • Lassellsville
    Rocks & Minerals (1970) 45:581-582
    No reference listed
        • Little Falls
    [www.johnbetts-fineminerals.com]; Rocks & Minerals 82:472-483
        • Town of Newport
    Rocks & Minerals 82:472-483
    http://www.roadsideamerica.com/attract/NYMIDdiamond.html; Rocks & Minerals 82:472-483
    New York State Museum Institute specimen
      • Montgomery Co.
        • Mohawk Township
          • Fonda
    [www.johnbetts-fineminerals.com]; Rocks & Minerals 82:472-483
    Rocks & Minerals 56:153-156
        • Palatine
    P Cristofono collection, 2007
    The New York State Museum Catalog No. 210.117
        • St Johnsville
      • Warren Co.
    NYSM 22367; NYSM 22367
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    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.
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