Webster's Online Dictionary
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Common Expressions: HERKIMER DIAMOND

ExpressionsDefinition
Herkimer diamondHerkimer diamonds are a particular variety of quartz found mostly in Herkimer County, New York. They are double terminated quartz crystals, that are harder than all other varieties of quartz crystals. Most herkimer diamonds have eighteen faces, often resulting in a natural diamond shape. (references)

Source: compiled by the editor from various references; see credits.

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Specialty Expressions: HERKIMER DIAMOND

ExpressionsDomainDefinition
Herkimer diamondMiningSmall, exceptionally clear, commonly doubly terminated quartz crystals in Herkimer County, NY; in cavities in sandstone and in loose earth or clay; also in mid-Atlantic beaches. Syn: Lake George diamond. (references)

Source: compiled by the editor from various references; see credits.

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