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Jewelry manufacture

Jewelry manufacture

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LONDON, UNITED KINGDOM - APRIL 19: The Crown Of Queen Elizabeth The Queen Mother (1937) Made Of Platinum And Containing The Famous Koh-i-noor Diamond Along With Other Gems. (Photo by Tim Graham/Getty Images)

LONDON, UNITED KINGDOM - APRIL 19:  The Crown Of Queen Elizabeth The Queen Mother (1937) Made Of Platinum And Containing The Famous Koh-i-noor Diamond Along With Other Gems.  (Photo by Tim Graham/Getty Images)

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Woman with a large diamond ring

Woman with a large diamond ring