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A large diamond ring presented in a box

Much like the durable gems it refers to, the advertising slogan “A Diamond Is Forever” has endured the test of time. The line was first penned in 1947 and cemented a connection between diamond rings and romance, though it was, ironically, conceived of by a woman who never married, opting instead to prioritize her career and spend time with her dogs. 

Mary Frances Gerety was a copywriter at the N.W. Ayer & Son advertising agency, where she was assigned to De Beers, a company that controlled the global supply of rough diamonds. At the time, diamonds weren’t as widely associated with love as they are today — before World War II, only an estimated 10% of proposals featured a diamond engagement ring. Many women tended to prefer more practical engagement gifts, such as a car or washing machine. It was up to Gerety to change that perception by convincing couples that diamond rings weren’t just a luxury, but an essential part of a marriage proposal.

Elizabeth Taylor was married eight times.

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Elizabeth Taylor was married eight times to seven different people over her lifetime. Her most widely discussed relationship was with actor Richard Burton, who she met while filming the 1963 epic “Cleopatra.” The pair were married in 1964, divorced in 1974, remarried in 1975, and divorced once more in 1976.

While working late on an ad campaign for the company, Gerety realized she’d forgotten to come up with a memorable slogan. According to The New York Times, Gerety later recalled, “Dear God, send me a line,” and jotted down the now-iconic phrase before heading to bed. When she awoke the next morning, she thought the slogan was passable but nothing special. But those four simple words, “a diamond is forever,” proved to be hugely successful U.S. diamond sales skyrocketed from $23 million in 1939 to an astounding $2.1 billion by 1979. Gerety’s creation was later named the top slogan of the 20th century by Ad Age.

Numbers Don't Lie

Numbers Don't Lie

Weight (in carats) of the Hope Diamond
45.52
Year of the first recorded marriage proposal with a diamond engagement ring
1477
Length (in feet) between bases on a standard baseball diamond
90
Sean Connery’s salary for 1971’s Diamonds Are Forever
$1.25 million

The only public diamond mine in the U.S. is located in ______.

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The only public diamond mine in the U.S. is located in Arkansas.

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“Diamonds Are a Girl’s Best Friend” was first performed by Carol Channing.

The song “Diamonds Are a Girl’s Best Friend” was popularized by Marilyn Monroe in the 1953 film Gentlemen Prefer Blondes — a musical performance later ranked as the 12th best in film history by the American Film Institute. But the song was originally sung by actress and comedian Carol Channing, who debuted it on the stage four years earlier.

Channing starred as Lorelei Lee in the original 1949 Broadway production of Gentlemen Prefer Blondes. The show featured music by Jule Styne — who also scored Gypsy and Funny Girl — and lyrics by Leo Robin, who won an Oscar for the 1938 song “Thanks for the Memory” from the Bob Hope film The Big Broadcast of 1938. Together, the pair composed “Diamonds Are a Girl’s Best Friend,” which was made famous by Channing during a nearly two-year Broadway run. Channing performed her signature song once again in the 1974 Broadway show Lorelei — a spinoff of the original 1949 musical.

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Interesting Facts writers have been seen in Popular Mechanics, Mental Floss, A+E Networks, and more. They’re fascinated by history, science, food, culture, and the world around them.