The World Record of ‘largest red diamond’ in the world has been achieved by Moussaieff Red Diamond from London, UK.

The Moussaieff Red Diamond (formerly known as the Red Shield Diamond) is a largest red diamond measuring 5.11 carats (1.022 g) with a triangular brilliant cut , with fancy red color. It is the world’s largest known red diamond. The Moussaieff Red was discovered in the 1990s by a Brazilian. It is currently owned by Moussaieff Jewellers Ltd.