This 5.11 carat diamond is valued at $7 million and is a fancy red stone. It is the biggest fancy red ever to be classified but at 5.11 carats, it’s actually quite small compared to some of the other gems on this countdown.

Previously known as the Red Shield Diamond, it was discovered in the River Abaetezinho in Brazil in 1990.

The stone was sold to Moussaieff Jewellers at the start of the new millennium and takes its current name from the company.