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Clear, doubly terminated quartz crystals in sedimentary rocks.
Originally described from Öhrli, Alpstein, Switzerland.

See also Marmaroscher Diamanten, found in nearby Vorarlberg (Austria).

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References for Öhrli-DiamantenHide

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Alean, C. (1971): Vom 'Öhrlidiamanten' zum Stern- und Szepterquarz (1. T.). Schweizer Strahler, Nr. 6, 179-185.
Alean, C. (1972): Vom 'Öhrlidiamanten' zum Stern- und Szepterquarz (2. T.). Schweizer Strahler, Nr. 10, 329-338.

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