A Hong Kong billionaire spent a record US$48.4 million to buy a 12.03-carat diamond dubbed “Blue Moon” for his seven-year-old daughter in an auction in Geneva, his spokesman confirmed on Thursday (Nov 12).

The extremely rare and flawless Blue Moon Diamond went to Hong Kong buyer
The extremely rare and flawless Blue Moon Diamond went to Hong Kong buyer Joseph Lau

Property tycoon Joseph Lau, who was found guilty of bribery last year in neighbouring Macau, bought the rock at a Sotheby’s auction Wednesday and immediately renamed it “The Blue Moon of Josephine” after his daughter.

The sale comes the day after he spent US$28.5 million buying a rare 16.08-carat pink diamond – the largest of its kind to ever go under the hammer – from rival auction house Christie’s, which he renamed as “Sweet Josephine”.

A Hong Kong-based spokesman for Lau confirmed the two purchases.

The 16.08-carat pink diamond
The 16.08-carat pink diamond

“The first was the pink one ‘Sweet Josephine’ and the second one was the ‘Blue Moon of Josephine’,” she said.

David Bennett, head of Sotheby’s international jewellery division, said the “Blue Moon” sale broke several records, making the gemstone “the most expensive diamond, regardless of colour, and the most expensive jewel ever sold at auction”.

The jewel, set in a ring, was sold for 48.6 million Swiss francs, including fees, with a starting bid of 43.2 million Swiss francs.

It also fetched the highest-ever price per carat, he said, with the buyer shelling out 4.02 million Swiss francs per carat.

Hong Kong tycoon Joseph Lau (second from right) at an auction in this file photo
Hong Kong tycoon Joseph Lau (second from right) at an auction in this file photo

The previous world record for a jewel sold at auction was held by the 24.78-carat “Graff Pink” diamond, which was sold by Southeby’s for US$46.2 million in November 2010.

Lau was locked in a telephone bidding war for eight minutes for “Blue Moon” before the hammer went down, with the precious jewel staying within its pre-sale estimate of US$35-55 million.

The diamond was discovered in South Africa in January last year and was the largest cushion-shaped blue stone in the fancy vivid category to ever appear at auction.

Experts say the market for coloured diamonds has grown increasingly robust and both the blue and pink diamonds garnered a lot of attention in the run up to this week’s jewel sales in Geneva.

This is not the first time Lau has bought rare jewels for his daughter. In 2009, he reportedly spent US$9.5 million on another blue diamond, which he renamed the “Star of Josephine”.

Josephine is his daughter with girlfriend and former aide Chan Hoi Wan, according to local media. The 64-year-old also has two children with long-time partner Yvonne Lui.

In March last year, Lau was found guilty of bribing a former minister in the gambling enclave of Macau in an attempt to purchase a prime development site.

Lau, who was not in Macau for the sentencing, is unlikely to serve time as the two semi-autonomous Chinese cities do not have an extradition agreement.

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