Minerals, Metals, and Other Materials

Rocks and Minerals

What are Cape May diamonds?

They are pure quartz crystals of many sizes and colors, found in the vicinity of the Coast Guard station in Cape May, New Jersey. When polished and faceted, these crystals have the appearance of real diamonds. Prior to the development of modern gem examination equipment, many people were fooled by these quartz crystals. The possibility of finding a Cape May diamond on one’s own, and the availability of already-polished faceted stones, has been a long-standing tourist attraction in the Cape May area.


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