Investment case

While Letšeng Mine is renowned for its large, high-value white diamonds, the Group has a number of other attributes that make it a unique and compelling investment proposition:

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Diamond frequency

Large high-value diamonds recovered from the Letšeng mine account for 75% to 80% of the Group’s revenue annually, making Letšeng the highest average dollar per carat kimberlite diamond mine in the world.

Since the Letšeng mine was acquired in 2006, it has recovered 121 greater than 100 carat rough diamonds. In addition, it has also produced high-quality pink and blue diamonds.


Cost efficiency

Operating costs per tonne at the mine are among the lowest in the world and the Group continues to realise ongoing benefits from the implemented BT initiatives and the ongoing CI programme currently being rolled out.


Resource base

Letšeng is a long-term asset with the possibility of further underground expansion.



The Group continues to monitor and advance innovative technology that improves operational performance and unlocks value by reducing diamond damage through early identification and non-mechanical liberation.


Strong customer relationships

The Group has developed excellent relationships with key customers over time that supported continued diamond sales at good prices in 2020.


Integrated multi-channel sales and marketing

Advanced mapping and analysis of diamonds assists strategic selling, partnering or manufacturing decisions to achieve the highest value through multiple selling channels.



Experienced global Board and Executive Management with a track record of successful mine plan optimisation and cost reduction.

Significant in-country experience and expertise has and continues to be developed at our operations.


Good governance

Commitment to ethical business practices and good corporate governance.



Gem Diamonds’ strategy has proven to deliver maximum value for all stakeholders.


Social and environmental responsibility

We are committed to promoting a culture of zero harm and responsible care to minimise our impact on the environment and optimise the benefit for our communities.


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Shareholder information

Regular engagements with shareholders and other stakeholders provide relevant input for decision-making, promote the long-term sustainability of the Group and enable our contribution to wider society.

Shareholder information

Regulatory news

Our archive holds all relevant news and RNS releases as part of our listing requirements for the LSE.

Regulatory news

Corporate governance

Good governance is not dependent on laws but on the principles and qualities of those who govern them.

Corporate governance