Quartz Double-Ended Stone / Herkimer Diamond – Crystal Grove, Lassellsville, New York, USA
 Particularly large Herkimer diamond in the very best quality!
 Crystals like this one offered here demonstrate in a particularly beautiful way that the sharp-edged, highly lustrous and transparent quartz rightfully deserves the nickname "diamond."
 Depending on the viewing angle, beautiful rainbows can be seen inside the crystal.
 Crystals of this size are in most cases not of such excellent quality, but rather have a milky, cloudy appearance.
 Therefore, large, clear crystals like this are extremely rare!