The fourth largest diamond was found in Karowe Mine, Botswana.
The diamond was named Lesedi La Rona and is 1.11 carats.
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American singer Mario released his hit single 'Let Me Love You.'
The first edition of America's oldest newspaper, The New York Evening Post, was published.
The city of Havana, Cuba, celebrated its 500th birthday.
The Skylab 4 mission was launched by NASA, taking a crew of three astronauts to the US space station.
Spanish conquistadors captured Atahualpa, the last Inca emperor.