JOHANNESBURG – One of the world’s largest diamonds weighing in at a whopping 1,758 carats has been recovered in Botswana, a mining company said in a statement.
A Canadian company running the Karowe diamond mine in central east Botswana said the retrieved stone was one of the largest diamonds ever to have been unearthed and the largest ever in the southern African nation.
“Lucara’s technologically advanced, XRT diamond recovery circuit has once again delivered historic results,” Eira Thomas, Lucara’s CEO said.
“Karowe has now produced two diamonds greater than 1,000 carats in just four years, affirming the coarse nature of the resource and the likelihood of recovering additional, large, high quality diamonds in the future, particularly as we mine deeper in the orebody and gain access to the geologically favorable EM/PK(S) unit, the source of both of our record-breaking, +1,000 carat diamonds,” the CEO added.
Since the company commissioned the innovative circuit using X-ray transmission technology (XRT) in 2015, the mine has significantly sped up the process of diamond recovery and also reduced the exposure of diamonds to harmful processes in more traditional forms of mining which can damage and even fracture precious stones, which in turn reduced potential revenues.
According to Lucara, since the new XRT plant was established some 12 diamonds exceeding 300 carats have been sourced. This includes two stones that weighed over 1,000 carats.
The huge diamond that was retrieved on Thursday weighed nearly 352 grams and measured 83mm x 62mm x 46mm.
Lucara owns 100 percent of the Karowe Botswana mine and is a leading independent producer of large exceptional quality Type IIa diamonds, the company said in a statement.
Botswana is the world’s leading producer of high quality diamonds.