Harry Winston was an American jeweler. He donated the Hope Diamond to the Smithsonian Institution in 1958 after owning it for a decade. He also traded the Portuguese Diamond to the Smithsonian in 1963 in exchange for 3,800 carats of small diamonds.

Marjorie Merriweather Post was an American businesswoman, socialite, and philanthropist. She was the daughter of C. W. Post and the owner of General Foods Corporation. For much of Marjorie Post's life, she was known as the wealthiest woman in the United States.