A rare 102-carat white diamond has sold at auction for $15.7m...

A rare 102-carat white diamond has sold at auction for $15.7m (£12.1m) in what experts say is a "bargain".

https://www.bbc.com/news/world-asia-54424327

The diamond was taken from a 271-carat stone which was discovered at a Canadian mine in 2018.

Only seven other diamonds larger than 100 carats and of the same quality have gone under the hammer.

The stone did not have a reserve price - a minimum price that the seller is willing to accept for an item.

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Sotheby's described the diamond as "flawless" and said it was "difficult to overstate its rarity and beauty".

Tobias Kormind, managing director of online jeweller 77 Diamonds, said the buyer had "bagged a bargain".

He said that by not having a reserve price, the seller had made a "brave decision that has come back to bite them".

In 2017, a necklace featuring a 163-carat diamond fetched $33.7m at a Christie's event in Geneva. The diamond, taken from a 404-carat stone in Angola, is said to be the largest diamond ever presented at auction. The buyer's identity was not revealed.

The same year, a rare pink diamond weighing just under 19 carats fetched 50.3m Swiss francs (£42.3m) at auction, a record price per carat.

The price of around $2.6m per carat marked a world record for a pink diamond, according to the Europe head of auction house Christie's.

Northern treasure

By Jessica Murphy, BBC News in Toronto

Canada - among the world's major diamond producers - is no stranger to big gems, even though large-scale mining for the stones only began there in the 1990s.

Two years ago, the Dominion Diamond Mines company announced the discovery of a 552-carat yellow gemstone, a North American record, at its site in the Northwest Territories, 135 miles (215km) south of the Arctic Circle.

The previous record-holding diamond was found at the same mine in 2015.

That stone - the Foxfire, a two-billion-year-old 187.7-carat diamond - was displayed around the world, including for a few weeks at Kensington Palace in London.

Canadian diamonds, often found in the remote northern reaches of the country, have a reputation for being conflict-free and more sustainably sourced than stones from some other nations.

That reputation is promoted and protected by the industry and local governments, though environmental campaigners argue the mines are damaging to the fragile northern ecosystem.