International News
Rio Tinto Unveils Rare 158ct Yellow Diamond from Diavik Mine in Canada
One of the largest gem-quality yellow diamonds ever discovered in Canada, the 158.20-carat gem is a remarkable find as Diavik Mine nears closure.
Rio Tinto has uncovered a rare and exceptional 158.20-carat yellow diamond at its Diavik Mine in Canada, marking one of the largest gem-quality yellow diamonds ever found in the country. This stunning discovery is also among only five yellow diamonds weighing over 100 carats to be unearthed by the company at Diavik throughout its 22-year history. Notably, Diavik is primarily known for producing white diamonds, with less than 1% of its output being yellow stones.
The Diavik Mine, which is set to close next year, is also responsible for several significant yellow diamond finds, including Canada’s largest yellow diamond, a 552.74-carat gem discovered in 2018, and the 187.7-carat Diavik Foxfire found in 2015.
With the closure of the Argyle mine in Australia in 2020, Diavik is now Rio Tinto’s sole diamond asset. Patrick Coppens, General Manager of Sales and Marketing for Rio Tinto’s diamond business, expressed excitement over the unique beauty and purity of the Diavik diamonds, eagerly anticipating the future of this extraordinary find.
International News
De Beers Narrowed Losses In H1 2026 Despite A Sharp Decline In Rough Diamond Prices
The decline reflected significantly lower realised rough diamond prices, although underlying operating performance improved. higher production, increased sales volumes and aggressive cost-cutting helped offset weaker pricing.
De Beers narrowed its losses in the first half of 2026 despite a sharp decline in rough diamond prices, as higher production, increased sales volumes and aggressive cost-cutting helped offset weaker pricing.
Revenue fell 19% to US$1.58 billion in the six months that ended 30 June 2026, from US$1.95 billion a year earlier. The decline reflected significantly lower realised rough diamond prices, although underlying operating performance improved.
Underlying EBITDA loss narrowed to US$113 million from US$189 million in the first half of 2025, while the underlying EBIT loss improved to US$209 million, compared with US$303 million a year earlier. EBITDA margin improved to -7% from -10%.
The average realised rough diamond price fell 32% to US$105 per carat, driven by a weaker product mix and a 16% decline in the average rough price index following inventory rebalancing measures introduced during 2025.
However, De Beers increased production by 46% to 14.9 million carats, while sales volumes rose 13% to 12.4 million carats, reflecting improved availability and stronger trading activity than in the comparable period. Unit costs declined 26% to US$64 per carat, helping cushion the impact of lower prices. Capital expenditure was reduced by a third to US$115 million.
During the second quarter, De Beers sold 6 million carats of rough diamonds, generating US$665 million in consolidated revenue, compared with US$1.2 billion from 6.8 million carats in the same period last year, underscoring the continued pressure on prices despite relatively stable demand.
The company maintained its 2026 production guidance at 21-26 million carats, although planned maintenance at the Orapa and Jwaneng mines and the proposed production pause at the Venetia mine in South Africa are expected to reduce output in the second half. Unit cost guidance remains unchanged at around US$80 per carat.
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