photo by Margaret Bourke-White from the LIFE archives

"Her hands, with their short, unpainted nails, are the used hands of a busy, creative person, but the enormous emerald solitaire looks perfectly at home guarding her wedding band. She wears other emeralds so casually that she might have been born with them."—Virginia Lee Warren (an excerpt from the September 1, 1964 New York Times article "Woman Who Led an Office Revolution Rules an Empire of Modern Design")