For investors, Lucara’s latest recovery is notable less for its immediate financial impact and more for what it signals about Karowe’s continued ability to produce rare, high-value stones, even from stockpiled material.
Lucara Diamond Corp. has reported the recovery of a 36.92 carat blue diamond from its Karowe Mine in Botswana. The company described the stone as a high-quality Type IIb diamond, one of the rarest categories of natural diamonds, and confirmed it was recovered using X-ray Transmission technology from surface stockpile material.
The recovery adds to a series of large stones reported by the company this year, with five diamonds exceeding 100 carats also recovered from stockpile processing.
A Notable but Not Transformational Event
While blue diamonds are exceptionally rare, the recovery itself is not unusual in the context of Karowe.
The mine is widely recognised as one of the few operations globally capable of consistently producing large, high-value diamonds, including historic recoveries such as the Sewelô and Lesedi La Rona. Against that backdrop, a 36.92 carat blue diamond is significant, but not unprecedented.
The more relevant point for the market is where the diamond came from.
That the stone was recovered from stockpiled material rather than active mining reinforces the view that Karowe’s historic ore continues to hold meaningful value. This is particularly relevant as the operation transitions from open pit mining towards its planned underground expansion.
Stockpiles as a Strategic Bridge
Lucara has been relying on stockpiles as a key source of mill feed as it advances underground development. The latest recoveries support the idea that these stockpiles are not simply low-grade residual material, but can still yield exceptional stones with disproportionate value.
CEO William Lamb said the recovery demonstrates the value contained within the company’s surface stockpiles, which remain an ongoing contributor to diamond production.
For investors, this reduces some of the risk typically associated with transition periods between mining phases, where production profiles can otherwise weaken.
Technology Remains Central
The recovery was made using X-ray Transmission (XRT) sorting, which has become a defining feature of Karowe’s processing approach.
Unlike conventional crushing circuits, XRT technology allows for the identification and recovery of large diamonds before they are damaged, which is critical in a deposit known for producing high-value stones.
This continues to differentiate Karowe from many other diamond operations, where recovery methods can limit exposure to large-stone upside.
Market Context
The broader diamond market has faced pricing pressure in recent periods, particularly in lower-value categories. Against that backdrop, high-quality and rare stones remain a key source of margin resilience for producers.
Recoveries such as this therefore matter less for volume and more for maintaining exposure to the upper end of the market.
