RARE lot of 20 Herkimer Diamonds — 4.30 carats Exceptional clarity - NO RESERVE PRICE- 0.86 g - (20)

Herkimer diamonds are double-terminated quartz crystals famous for their exceptional clarity and natural faceting. Unlike true diamonds, they are quartz but earn the name for their diamond-like brilliance. These crystals naturally form in dolomite rock around Herkimer County, New York. The lot contains 20 Herkimer diamonds totaling 4.30 carats, highlighting their collectible appeal among mineral aficionados. Known for their sharply defined terminations and vitreous luster, Herkimer diamonds are popular for jewelry and metaphysical collectors. Their natural formation often includes inclusions such as air bubbles or other minerals, although specimens with exceptional clarity—as in this lot—are particularly sought after for their gem-like appearance.