The Pink Star Diamond is the most costly diamond in the world, with a value of $71.2 million. It is a pink diamond weighing 59.60 carats that was purchased in a 2017 Sotheby's auction in Hong Kong.
The Blue Moon of Josephine is a 12.03-carat blue diamond with a $48.5 million market value. It is named after the buyer's daughter and was purchased at a Sotheby's auction in Geneva in 2015.
The Oppenheimer Blue is a 14.62-carat blue diamond with a price tag of $50.6 million. It was sold at a Christie's auction in Geneva in 2016 and is named for its previous owner, Sir Philip Oppenheimer.
This diamond necklace, which is valued at $55 million, has the largest internally flawless diamond in the entire world, measuring 407.48 carats. It took Mouawad four years to develop and make.
The Pink Promise Diamond is a 14.93-carat pink diamond that was purchased at a Christie's auction in Hong Kong in 2017 for $32.1 million.
The Graff Pink is a 24.78-carat pink diamond that is worth $46 million. It was previously owned by Harry Winston and was sold at a Sotheby's auction in Geneva in 2010.
The Winston Blue, a perfect blue diamond weighing 13.22 carats, is worth $23.8 million. It was sold at a Christie's auction in Geneva in 2014 and is named after the well-known jewellery designer Harry Winston.
The Moussaieff Red is a 5.11-carat red diamond with a value of $20 million. It was found in Brazil in the 1990s and is the biggest red diamond that is currently known to exist.
The Perfect Pink is a 14.23-carat pink diamond with a price tag of $14 million. In 2010, it was bought in a Christie's auction in Hong Kong.
The Blue Belle of Asia is a 392.52-carat sapphire with a price tag of $17.3 million. It is regarded as one of the most significant sapphires in the entire world and was purchased at a Christie's auction in Geneva in 2014.