Rio Tinto’s diamond production soared 110% year-on-year to 1.14 million carats in the third quarter of 2025, driven by strong performance at its Diavik mine in Canada. However, output was 8% lower than the previous quarter as mining transitioned through lower-grade areas.
The company reported that diamond exploration activities continued at its Chiri project in Angola, underscoring its focus on strengthening its long-term supply pipeline.
In a separate development, Rio Tinto hosted its final Beyond Rare™ Tender in September, featuring an exceptional collection of pink, red, violet, yellow, and white diamonds—marking the end of an era for its iconic Argyle heritage stones.
The diamond business remains under the Chief Commercial Officer’s portfolio for strategic review, alongside Borates and Iron & Titanium. Despite the review, Rio Tinto affirmed its commitment to maintaining safe and profitable operations and meeting customer commitments.