Diamond sorting with TOMRA machine

Diamonds

Maximize diamond recovery while optimizing costs: Our holistic approach and cutting-edge technology can help you achieve both and deliver outstanding results.
Lucara Diamond found by TOMRA XRT Machine
Credit: Lucara Diamond Corp.

TOMRA Mining XRT technology recovers exceptional 2,492 carat diamond from Lucara’s Karowe mine

One of the largest rough diamonds in recorded history, a 2,492 carat stone, was recovered by Lucara Diamond Corp. with TOMRA X-Ray Transmission technology at the Karowe Mine in Botswana. This exceptional diamond is the latest of many impressive recoveries achieved at the mine with TOMRA's sensor-based technology since it's installation in 2017, which include the record-breaking 1,758 carat Sewelô and the 1,109 carat Lesedi La Rona.

“We at TOMRA Mining are proud to be part of Lucara’s incredible journey, with our XRT technology contributing to their historic recoveries,” says Albert du Preez, Head of TOMRA Mining. “Once again, Lucara’s innovative strategy and approach to diamond recovery, combined with TOMRA’s advanced sensor-based technology, has proved to be hugely successful. The long string of exceptional diamonds recovered at the Karowe mine with our XRT sorting solution highlights the effectiveness of our cutting-edge technology and its ability to unlock unparalleled value for kimberlite and diamond mining companies.”

Diamond Sorting, today and beyond.

TOMRA: The unique diamond recovery solution.

In diamond sorting, every rock counts. With our top of the line sensor-based sorting systems, we can help you achieve maximum value from your input, and make sure that nothing is lost in the process.

You don’t have to take our word for it, our results speak for themselves: most recently with the recovery of one of the biggest diamonds in history.

Diamonds

Key benefits using XRT for diamond concentration

Diamond USPS

Our products

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COM XRT 300 /FR

The COM XRT 300 /FR specializes in concentrating different sized streams for final recovery applications. Developed for the diamond sector to produce an ultra-high diamond by weight concentrate, it also delivers excellent results in other high value product applications.
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COM Tertiary XRT

The COM Tertiary XRT features very precise detection and ejection especially for smaller particle sizes. The mechanical setup is specialized for this material and is equipped with high performing and precise air ejection valves.
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COM XRT 2.0

The COM XRT 2.0 features higher belt speed and throughput, which translate directly into increased productivity in mineral processing. A more powerful X-ray system accommodates the sorting of larger-sized material due to better X-ray penetration.
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Karowe Mine, Lucara Diamond Corp, Botswana

Lucara Diamond Corporation owns the Karowe diamond mine in Botswana, which has been in production since 2012. The mine is recognised as one the foremost producers of very large, high-quality Type IIA diamonds in excess of 10.8 carats.

Eira Thomas explains the reasons for their choice of working with TOMRA: “We felt, certainly, that the technology that TOMRA offered was the best. But, more importantly, I think it was really around the approach, the attitude of collaboration and willingness to actually work with Lucara as we undertook to solve this problem, and that to us was a very appealing element  because we weren’t entirely certain what the solution was going to be, we just felt that by working with a team of experts that understood the problem and had technology that could help us, we could together come up with a solution that made sense.

More diamond customer stories

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1757 carat diamond recovery

TOMRA Sorting Mining is pleased to announce one of the largest diamonds in recorded history, an unbroken 1,758 carat stone, was recovered by TOMRA XRT sensor technology commissioned by Lucara Diamond Corp at its Karowe Mine in Botswana.
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TOMRA Mining COM XRT installation at Letseng mine

X-ray transmission technology: a true game-changer for diamond mining

The big challenge in diamond mining is not only to find the diamonds hiding in the rock, but very importantly to extract them minimising breakages and dealing with waste effectively and cost efficiently.
X-ray sorting at Letseng mine
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TOMRA’s technology and partnership approach delivers record-breaking diamond recoveries for Lucara

Lucara Diamond Corporation owns the Karowe diamond mine in Botswana. Historic recoveries include the 1,109 carat Lesedi La Rona – the second-largest gem quality diamond ever found – and the 813 carat Constellation diamond. Lucara’s success at the Karowe mine continues, most recently with rare gem quality blue and pink diamonds recovered in September 2019.
Read more about the remarkable diamond recoveries
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TOMRA’s ore sorting technology delivers impressive improvement at Stornoway Diamonds Renard mine

Stornoway Diamonds is a leading Canadian diamond exploration and producing company. It owns and operates the Renard Mine, in commercial production operation since 2017. It is the first diamond mine in Québec and one of six in Canada. Renard Mine started with an open-pit mine and subsequently opened an underground mine.
Read the full customer story
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Our services

Diamond sorting process

Test Centers

Wondering if your material would benefit from our sorting solutions? Try it for yourself at one of our test centers, we enjoy a challenge! Our test centers provide comprehensive services for the development of potential sensor-based sorting projects for the mining industry.
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Service being done on TOMRA Mining sorting machine

Service & Support

Maximizing your operation’s uptime and efficiency, minimizing its environmental impact, ensuring your profitability: we understand the challenges you face every day. As your service and support partner, we are always at your side
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TOMRA INSIGHT

TOMRA Insight enables easy and remote support from our service engineers, significantly reducing the risk of downtime. We also provide data-driven optimization of sorting processes through online monitoring and digital applications.
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Contact us

Corné de Jager Diamond Segment Manager Profile picture
Corné de Jager
Diamond Segment Manager
Phone: +27 72 688 4684
Contact Corné
John Houghton Profile
John Houghton
Sales Engineering Specialist, Diamonds
Phone: +27 66 261 3442
Contact John