The Lesedi La Rona remains the largest uncut diamond ever discovered at the Karowe Mine in Botswana. This extraordinary gemstone captures global attention not only for its immense size but also for the story it tells about Earth's deep geological history.
Among uncut stones that retain their natural crystal form, the Lesedi La Rona stands above all others in weight and significance. Its discovery reshaped records and highlighted the value of preserving stones in their raw state.
| Stone Name | Weight (Carats) | Location | Year of Discovery |
|---|---|---|---|
| Lesedi La Rona | 1,109 | Karowe Mine, Botswana | 2015 |
| Cullinan I (Great Star of Africa) | 530 | Cullinan Mine, South Africa | 1905 |
| Excelsior Diamond | 995 | Jagersfontein Mine, South Africa | 1893 |
| Sergio Rough Stone | 3,167 | Brazil | 1895 |
| Premier Rose Rough | 1,370 | Cullinan Mine, South Africa | 1978 |
Discovery and Recovery at Karowe Mine
The Lesedi La Rona was identified in November 2015 during routine sorting at the Karowe Mine. Advanced imaging and measurement confirmed that it surpassed all other known uncut stones in clear carat weight.
Physical Characteristics and Crystal Structure
Weighing 1,109 carats, the stone is nearly the size of a ping pong ball. Its color grade is classified as GIA Crystal Clear, indicating a near-colorless appearance with strong transparency that allows experts to evaluate internal features.
Value, Ownership, and Sale Attempts
After its discovery, the Lesedi La Rona became the property of the Botswana government through the state-owned entity. Numerous parties submitted offers, but Lucara Diamond successfully negotiated to acquire the rights and later planned to showcase the stone as a centerpiece of natural heritage.
Technical Specifications and Gemological Analysis
Gemological institutes documented the Lesedi La Rona with detailed reports covering clarity, inclusions, and structural integrity. These technical findings help determine its potential for cutting into polished gems while retaining maximum historical value.
Future Potential and Preservation Efforts
Ongoing discussions about cutting versus preservation reflect the tension between commercial value and historical significance. Institutions emphasize careful planning to retain scientific and cultural insights from the largest uncut diamond.
- Reported as the largest uncut diamond ever discovered at over 1,100 carats
- Found at Karowe Mine in Botswana in 2015
- Retains natural crystal structure with detailed gemological documentation
- Ownership remains with the Botswana government
- Considered for both scientific study and high-value gem cutting
FAQ
Reader questions
How was the Lesedi La Rona discovered and confirmed as the largest uncut diamond?
It was found at Karowe Mine in Botswana in 2015 and verified through advanced imaging, weighing 1,109 carats and surpassing all previously known uncut stones.
Who currently owns the Lesedi La Rona and how was the ownership determined?
The stone is owned by the Botswana government through a state-owned entity, as local laws assign mineral resources to the state following discovery.
What are the key physical and gemological characteristics of the Lesedi La Rona?
The diamond is nearly colorless with a clarity profile documented by gemological institutes, and its structure allows experts to consider cutting options while preserving its natural form.
Have there been any attempts to sell or display the Lesedi La Rona publicly?
Lucara Diamond acquired rights and planned showcases to highlight the stone as a natural heritage piece, though no finalized public exhibition or sale has occurred recently.