The diamonds to be sold by Vutomi, in which Botswana Diamonds holds a 40% interest, are expected to generate short-term cash flow to further develop he Thorny River project.
The exchange will work Fastmarkets to provide the reference price lithium, a key component in the batteries that power electric vehicles and high-tech devices.
The company will focus on the Wedge, Fork, and Russet South satellite deposits with the object of converting and growing mineral resources used in the recently released preliminary economic assessment (PEA).
Vale said the Sul Superior dam, located just 1.5 km from the mine, remains intact and that it continues to be monitored 24/7 via radar, drones and a robotic station capable of detecting the slightest movements.