mineral
Herkimer Diamond
Quartz (Silicon Dioxide, SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, transparent to translucent color, vitreous luster, hexagonal crystal system with double termination.
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Physical properties
Hardness of 7 on the Mohs scale, transparent to translucent color, vitreous luster, hexagonal crystal system with double termination.
Formation & geological history
Formed in exposed outcrops of Cambrian-aged Little Falls dolostone through silica-rich solutions in cavity spaces over millions of years.
Uses & applications
Highly sought after by mineral collectors and used in jewelry making without the need for cutting or polishing.
Geological facts
They are exceptionally clear and naturally double-terminated with 18 crystal faces, mimicking precision-cut diamonds.
Field identification & locations
Found primarily in Herkimer County, New York, identifiable by their brilliant clarity and distinct double-terminated crystal geometry.
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