One of five streets in East Village named after the colours of the Olympic rings, on the site of the former Athletes’ Village which was redeveloped for the London 2012 Olympics. In this case Logan Close represents the blue ring, named after the Logan sapphire, which is one of the world’s largest stones of its type. The Logan Sapphire, which is the second largest (blue) sapphire known, weighing 422.99 carats (84.6 g), is named after Polly Logan, who donated the gemstone to the Smithsonian Institution in 1960. It was found in Sri Lanka.
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