A rare pink diamond weighing only 34 grams has been found in the African country of Angola.
It is considered the greatest discovery in the last 300 years.
The 170-carat stone was named "Lulo Rose", after the mine where it was found. It is believed to be the largest pink diamond after the 185-carat Daria-i-Noor diamond.
The Daria-i-Noor was cut from a larger stone and is now among the jewels of the Iranian royal crown.
The Lulo Rose is a type 2a diamond, meaning it has little or no impurities.
"This record-breaking and spectacular pink diamond found by the Lulu mine is confirmation that Angola is an important player on the world stage," said Diamantino Azevedo, the southwest African country's mineral resources minister.

It is the fifth largest diamond found in the mine, which is a joint venture between Australian company Dijamanti Lukapa and the Angolan government.
Similar diamonds have fetched tens of millions of dollars in the past, and one, also known as the Pink Star, was sold at an auction in Hong Kong in 2017 for $71.2 million.
Joanna Hardy, an independent gem expert, told the BBC that it was impossible to estimate the value of this diamond until it had been completely cut.
Pink diamonds are rare, and the very physical characteristics that make them so rare also affect their hardness.
That is why it is difficult to give them a certain shape.
However, Hardy believes there is little chance of the stone ever appearing in public or going up for auction, as dealers already have customers eager to buy such a rare find.
The most famous pink diamond, Daria-i-Noor, was found in India and experts believe it is part of an even larger stone.
The largest rough diamond of any color is the Cullinan diamond, discovered in South Africa in 1905.
Weighing 3107 carats, which is more than half a kilogram, it is cut into 105 different stones.
Cullinan The First, the largest among them, is the most transparent diamond in the world and is part of the British Crown Jewels.