Herkimer Diamond SiO2 - 4.DA.05 (Strunz)(from Herkimer Co., New York, USA) -Is a diamond? -No, is
Herkimer Diamond SiO2 - 4.DA.05 (Strunz)(from Herkimer Co., New York, USA) -Is a diamond? -No, is a variety of quartz, but has a clear doubly-terminated and highly lustrous crystals. People say that these specimens grow at the same temperature and pressure than diamond. This variety is from Herkimer (New York) and is famous for its perfection, transparency and luster. -- source link
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