$60 million "Pink Star" diamond goes back on sale next month

Alistair Smout

(Adds quotes, detail)

LONDON, March 20 (Reuters) - A 59.60-carat diamond known as

"The Pink Star" is returning to auction next month and could

fetch a record $60 million, three years since it was sold for

even more - only for the buyer to pull out of the deal.

The diamond was presented by Sotheby's in London ahead of

the auction in Hong Kong on April 4.

In November 2013, a Geneva auction of the stone fetched a

world record $83 million but the buyer, New York-based diamond

cutter Isaac Wolf, could not pay up and defaulted. (http://www.reuters.com/article/sothebys-pinkstar-idUSL3N0LX2KN20140228)

However, after some more successful auctions of coloured

diamonds in recent years, the auction house said that now was a

good time to try again.

"The last few years we've had coloured diamonds perform

extremely well, many new records been created at auction for the

coloured diamonds, pinks and blues mainly, so we thought it was

a good time to bring it to the market," David Bennett, worldwide

Chairman of Sotheby's Jewellery Division, told Reuters.

In 2015 the "Blue Moon of Josephine" sold for $48.5 million

in Geneva. At 12.03 carats, it set a price-per-carat record.

"The Pink Star" is the largest Internally Flawless Fancy

Vivid Pink diamond ever graded by the Gemological Institute of

America (GIA), the auction house said, yet the sparkling stone

is still small enough to fit onto a ring.

Sotheby's said that the mixed-cut diamond was initially

mined by De Beers in 1999 in Botswana as a 132.5 carat rough

diamond before being cut and polished.

Its refined form is now set to be the most valuable polished

diamond ever offered at auction.

"The extraordinary size of this 59.60-carat diamond, paired

with its richness of colour, surpasses any known pink diamond

record in history," Bennett said.

Bennett said the current record for a pink diamond was held

by the "Graff Pink". At 24.78 carats it is half the size of The

Pink Star and was sold in Geneva for $46.2 million in 2010.

(Additional reporting by Jayson Mansaray; editing by Stephen