Giant white diamond named The Rock makes debut in Dubai

The stone is a 228.31-carat pear-shaped gem and will go to auction in May

A Christie's auction house member of staff displays the giant diamond, nicknamed The Rock, in Dubai on March 25. All photos: AFP

The diamond is a 228.31-carat pear-shaped gem, which was mined and polished in South Africa more than 20 years ago.

The Rock will be on display in Dubai from March 26 to 29. It will then travel to Taipei, New York and Geneva, Switzerland, where it will be auctioned on May 11.

A closer look at The Rock.

It is expected to fetch up to $30 million at auction.

It is the 'largest existing D-Z colour pear-shaped diamond ever graded' by the Gemological Institute of America, Christie's said.

The diamond is on display at Christie's, Dubai.

A giant diamond nicknamed The Rock went on display for the first time in Dubai on Friday ahead of an auction where it is expected to fetch up to $30 million.

The 228.31-carat pear-shaped gem, which was mined and polished in South Africa more than 20 years ago, is the largest white diamond to come to auction, said auction house Christie's.

After making its debut at Christie's Dubai, where it will be displayed from March 26 to 29, The Rock will travel to Taipei, New York and Geneva, Switzerland, where it will be auctioned on May 11.

"The Middle East has always had such a great appreciation for important jewels and gemstones," Rahul Kadakia, international head of jewellery at Christie's, told AFP.

"We thought it would be nice for us to launch the diamond in an area where there are so many great collectors for important gems of this nature."

The diamond is the "largest existing D-Z colour pear-shaped diamond ever graded" by the Gemological Institute of America, Christie's said, adding, it is "G colour, VS1 clarity".

The previous auction record for the largest colourless diamond was a 163.41 carat sparkler that sold in November 2017 for $33.7 million, Christie's said.

Earlier this year, Sotheby's in London sold The Enigma — the largest cut diamond to come to auction, at 555.55 carats — for $4.3 million.

Scroll through the photo gallery to see the rare 555-carat black diamond recently unveiled in Dubai:

The Enigma is a 555.55-carat black diamond. All photos: Ruel Pableo for The National

It is the world’s largest Fancy Black Natural Colour diamond, as reported by Gubelin and the GIA.

The stone has 55 facets and is believed to have extraterrestrial origins.

The gemstone is on view at the Sotheby's showroom in the DIFC.

The Enigma will remain in Dubai until January 20.

The stone will be auctioned via a single-lot online sale.

Sotheby's is accepting cryptocurrency for this sale.

The Enigma was acquired by its current owner in the 1990s and was previously unseen on the market.

Carbonado diamonds are believed to be 2.6 to 3.8 billion years old.

Carbonado diamonds are only found in Brazil and the Central African Republic.

They are believed to have been formed when a meteorite collided with the Earth billions of years ago.