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WD Lab Grown Diamonds Acquires J2 Materials, a Pioneering Materials Science Company News provided by Share this article WASHINGTON, Jan. 26, 2021 /PRNewswire/ --  M7D Corporation d/b/a WD Lab Grown Diamonds ("WD" or the "Company"), a leading U.S. producer of laboratory grown diamonds, announced today that it has completed the strategic acquisition of J2 Materials ("J2"), a pioneering crystal growth technology company headquartered in Chicago, Illinois. "Our acquisition of J2 is an important ...