DiamondBuzz
ALROSA’s Severalmaz ramps up output as Karpinsky-2 diamond pipe enters development
Russian diamond giant ALROSA has begun full-scale development of the Karpinsky-2 kimberlite pipe at the M.V. Lomonosov diamond field in the Arkhangelsk region, marking a major step forward for its local subsidiary, Severalmaz. Karpinsky-2 becomes the third active pipe at the site, alongside the existing Arkhangelsk and Karpinsky-1 operations.
Karpinsky-2 holds more than 40 million tonnes of diamond-bearing ore and was first evaluated in 2018 through pilot mining operations, which confirmed its commercial viability. Preparatory work for full development began earlier this year, and the project officially moved into the design phase during a recent visit by ALROSA CEO Pavel Marinychev.
Marinychev, who personally launched the design stage, also assessed Severalmaz’s performance for 2025 during his visit. In the first five months of the year, the company surpassed its ore extraction targets and improved operational efficiency, resulting in a 9.4% increase in ore processing. These gains translated into the production of more than 1.2 million carats of rough diamonds.
The CEO also reviewed progress on a new water recycling system at the Lomonosov processing plant and emphasized the importance of completing a gym facility for workers at the shift village by year-end, highlighting the company’s focus on both sustainability and employee well-being.
“I am sure that the work of the Severalmaz team will drive the enterprise’s continued growth. We remain committed to providing safe working conditions and contributing to the development of the Arkhangelsk region,” Marinychev stated.
ALROSA, which produces about 30% of the world’s diamonds and 90% of Russia’s output, reported production of 33 million carats in 2024. The company’s proven reserves exceed 1 billion carats, solidifying its position as the global leader in diamond mining.
DiamondBuzz
Lesotho’s Kao Diamond Mine To Halt Operations Amid Industry Slump
The Mine’s Operator, Storm Mountain, Cited A Severe Financial Crisis Driven By A Prolonged Drop In Global Rough-diamond Prices, Rising Middle East Conflict
Lesotho’s largest diamond mine, Kao, will cease operations on June 30 and transition to care and maintenance. The mine’s operator, Storm Mountain, cited a severe financial crisis driven by a prolonged drop in global rough-diamond prices, rising Middle East conflict-related fuel costs, and stiff competition from lab-grown diamonds.
Despite a warning last October that the mine required $13 million in fresh capital to survive, the necessary investment did not materialise. According to CEO Neo Hoala, the steep market decline made continued operations unsustainable. The shutdown will impact roughly 750 workers.
The mine’s financial downturn is stark: in 2024, Storm Mountain sold 250,000 carats for $50 million—a massive drop from its $105 million revenue in 2022. Kao’s suspension reflects a broader crisis in the diamond sector, following recent insolvencies and closures at Canada’s Ekati mine and South Africa’s Ekapa and Finsch mines.
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