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Cape May diamonds
Cape May diamonds (sometimes capitalized "Diamonds") are quartz pebbles found on the beaches of Cape May Point, New Jersey. The pebbles are sometimes collected, cut and polished to resemble diamonds, then sold locally as souvenirs. Cape May diamonds are usually collected by beach combing and are most abundant at Higbee (sometimes, Higby's) and Sunset beaches in Cape May. Cape May diamonds range in size from the finest sand to a "Cape May diamond" found in New Castle, Delaware in 1866.
==Origin==
Cape May diamonds are actually pieces of quartz washed down, and worn smooth in the process, from the upper Delaware River. Apocryphally, the trip takes thousands of years. However, geologists suggest the pebbles are local in origin, washing out of nearby Pleistocene gravel deposits. Cape May diamonds are sometimes incorrectly described as river-smoothed glass discarded by the New Jersey's once-thriving glass manufacturing industry.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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