Botswana has reached an eleventh-hour deal with diamond giant De Beers after months of tense negotiations that saw the continent’s top producer threatening to cut ties with the storied company.

The Botswanan government and Anglo-American PLC, the majority owner of De Beers, have reached an “agreement in principle,” the two sides said in a statement issued on late on Friday.

The agreement provides for a new 10-year agreement to sell the rough diamonds produced by Debswana Diamond Co — a joint venture equally owned by the government and De Beers — and a 25-year extension of its mining licenses.

It also gives Botswana an increased 30 percent of diamond production for sale via the state-owned Okavango Diamond Co, progressively increasing to 50 percent in the final year of the contract, De Beers said in a separate statement on Saturday.

No value was given for the agreement. The previous 2011 sale agreement between the southern African country, one of the continent’s richest, and the world’s largest diamond company by value, was extended exceptionally until Friday last week, due to the COVID-19 pandemic.

Under terms negotiated by the two sides in 2011, De Beers received 90 percent of the rough diamonds mined, while Botswana had 10 percent to sell itself.

In 2020, Botswana’s share was hiked to 25 percent. Botswanan President Mokgweetsi Masisi had threatened to cut ties with the company if the latest talks proved unfavorable for his country.

“If we don’t achieve a win-win situation each party will have to pack its bags and go,” he said in February.

The country turned up the heat the following month by announcing it would soon conclude an agreement to take a 24 percent stake in the Belgian diamond manufacturer HB Antwerp.