12th Annual Smithsonian Magazine Photo Contest
A Herkimer diamond is a crystal that is characterized by having terminations on both ends . My geologist brother tells me they are found in ancient rock ( about 500 million years old) but the crystals were probably formed at a later time by hot liquids passing through sponge-like, porous rock. They are named after Herkimer, N.Y., where they have been found in abundance.
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||Nov. 17, 2014, 10:10 p.m.