Finding follows the recovery of five other diamonds of over 100 carats so far this year at the company's flagship Letšeng mine, in Lesotho.
Africa Mining News
New controls aims at holding the company's partners, including Glencore, China Molybdenum and Ivanhoe, accountable in copper and cobalt projects
The miner warned further reductions could be in store at those operations, which employ 31,000 people.
The Africa-focused diamond miner said that would likely happen unless it solves its issues with the government of Tanzania.
Draft bill gives government first option to buy unusually large diamonds found in the country's mines, such as the world's second-biggest 1,109 carat diamond discovered by Lucara two years ago.
Projects aim at boosting output and lowering costs.
The decision to offload the asset is part of a restructuring process that includes laying off about 8,500 workers, roughly 30% of the company’s workforce.
The South African mines ministry has told platinum miner Lonmin that it failed to meet some of its social and labour obligations, the producer said on Tuesday, but added it did not think its operating licence was in jeopardy.
Mines minister Mosebenzi Zwane had pledged in writing to a court that he would not publicly say changes to an industry charter were "law" until a judicial challenge has been completed.
Ivanhoe boss transforms what could have been a set of exciting drill results into 43 holes of “global significance in the copper world”.
International watchdog group Global Witness says political elites and security forces have controlled and secretly exploited Zimbabwe's diamond sector for over a decade.
The National Union of Metalworkers of South Africa (NUMSA) has demanded Glencore raise coal mining wages by 15 percent.
Mali is the third-biggest gold producer in Africa after South Africa and Ghana, and gold overwhelmingly dominates its mining sector.
Mainly due to lower output from Konkola Copper Mines, a subsidiary of London-listed Vedanta Resource
The diamond miner also had to halt operations at its Williamson mine as several key employees are being questioned by local authorities.
South Africa holds the world's biggest reserves of platinum, chrome and manganese, but investment in the sector has dropped in each of the past two years as a result of increasing legal uncertainty and labour disputes.
Once Banfora is up and running, it would take the company's annual gold output to between 300,000 and 350,000 ounces.
Official figures released on Thursday signall a bad start for the second half of the year with business confidence at its lowest in more than three decades.
President John Magufuli has asked for a review of a local contract belonging to Petra Diamonds and ordered senior officials to resign over the outcome of a probe into the diamond and tanzanite sector.
Acacia Mining, which is scaling back operations to cut losses and settle a dispute with the Tanzanian government, has spent $3.2 million on options to sell 210,000 ounces of its gold output at $1,300 per ounce.
China agreed on Wednesday to loan Guinea $20 billion over almost 20 years in exchange for concessions on bauxite, an ore of aluminium which the West African country has in abundance, the mines minister said.
A rise in refined supply (despite a 9% dip in mine-level output) and a drop in automotive and industrial demand erases Q1's 305,000-ounce deficit.
“The decision was driven by unsustainable cash outflows at the mine due to the concentrate ban and the operating environment,” company officials said in a statement.
Deputy Minister of Mines and Mining Development, Fred Moyo, said that his team looked into production and trading circles
BacTech Environmental: “Green Gold” processing technology addresses artisanal mining and ARD problems
Every year millions of small-scale miners toil in the baking sun, collecting and breaking rocks with the goal of extracting small amounts of gold - enough to make a living in some of the most impoverished corners of the world.