A Woman to Know: Mary Frances Gerety

She really created these romantic ideas that we now associate with diamonds, but she herself was not romantic in any way. It didn't interest her. — J. Courtney Sullivan

(image via Flickr)

Mary Frances wrote one of the most famous ad slogans of all time: "A Diamond is Forever."

In 1943, she joined a Philadelphia ad agency, hired as a female copywriter t…