The Hope Diamond is formally donated to the Smithsonian by Harry Winston, a New York gem merchant. The stone was acquired by Winston in 1949 from the estate of Mrs. Evalyn Walsh McLean, who received it from her husband, Edward B. McLean, in 1911. The diamond's known history dates to 1830 when David Eliason, a noted gem dealer, sold the stone to Henry Thomas Hope.  More - https://siarchives.si.edu/collections/siris_sic_1089.