Lucapa Diamond Company has recovered more large diamonds from the Lulo diamond mine in Angola.
The latest stones include diamonds weighing 103 carats and 83 carats, both recovered from Mining Block 8.
"The 103-carat light brown diamond and 83-carat Type IIa diamond continue to evidence the special nature and potential of the Lulo resource," the miner said.
De Beers sold rough diamonds with a provisional value of $450 million in the 10th sales cycle (Global Sightholder Sales and Auction Sales) of 2017.
The mining giant said that there had been a continuation of good demand heading towards the end of the year.
The UN Office in the Russian Federation has ranked ALROSA in the top three firms for environmental responsibility among Russian mining and smelting companies.
De Beers sold a provisional $418 million of rough stones at its tenth and final sales cycle of 2016.
De Beers said the confirmed value of goods for its previous sales cycle was $476 million, compared with a provisional figure of $470 million stated just after the sale.
In December 2016, sales came to $248 million.
Andrey Zharkov, the President of PJSC ALROSA, has held annual business meetings with the company’s long-term clients from more than 70 companies around the world.
The sides discussed ALROSA’s management diamond market trends, the company’s sales structure, and assessed ALROSA’s steps on developing its sales methods and geography.
More than 20,000 diamond workers from small diamond plants are jobless as their employers have not reopened their businesses following the Diwali vacation due to the effects of demonetization, The Times of India reported.
Russian oil giant Lukoil sold its Grib diamond mine to the Russian investment group Otkritie Holding for $1.45 billion in cash, according to Russian media reports.
The deal should be completed in the first quarter of 2017, subject to approval by several government offices.
Lucara Diamond Corporation said it has ended its contract with Eqstra Botswana to provide mining related services at its Karowe mine in Botswana.
"Contrary to recent media reports in Botswana, the company is unaware of any fraud or illegal activities, of its current or former employees, in relation to the mining contract," Lucara said in a statement.
ImaGem has launched 3DPro for interactive visuals to facilitate the buying and selling of diamonds.
The firm said that the 3DPro expands the diamond experience from a static image to a dynamic 3D experience.
Rio Tinto has reduced its mineral resources estimate for the Argyle diamond mine in Western Australia.
The miner said in a statement that estimated mineral resources - the volume of material that can be extracted for economic purposes - fell last year.
The miner cut its estimate by 66 percent to 15 million tonnes in 2016.