Explore alluvial diamond mining in Sierra Leone with Millennia Minerals. Watch field operations and discover our commitment to ethical, traceable diamonds.
On the Ground in Sierra Leone: Alluvial Diamond Mining in Action
Millennia Minerals is pleased to share new footage from the field in Sierra Leone, filmed early November 2026. Working alongside our local partners, our team carried out alluvial diamond mining, using excavators to reach the diamond bearing gravels and processing them on site.
The alluvial advantage
Alluvial diamonds have already done much of the hard work themselves. Over millions of years, rivers eroded them from their original host rock and carried them downstream, where they settled in gravel beds near the surface. That brings some clear advantages:
- Shallow digging: the diamond-bearing gravels can often be reached with excavators, without deep shafts or large open pits.
- Lower cost: no blasting, no hard-rock crushing, and far less heavy infrastructure than a conventional mine.
- Faster to production: a small, mobile operation can move from digging to processing in days, not years.
- A lighter footprint: worked areas are smaller and shallower, which makes them easier to rehabilitate
Working with local partners
This work was carried out with our local partners in Sierra Leone, whose knowledge of the land and its communities is invaluable. Our goal remains the same: every diamond we recover should be ethical, conflict-free and fully traceable, from the mine to the market.
We look forward to sharing more updates from the field as our Sierra Leone operations progress.