revenues of Angola 's diamond mine diamonds in the first quarter of 2019 were $ 22.1 m , achieving an average price per carat of $ 3,668 , making Lulo the world ’s highest - average - priced alluvial diamond producer . Parcels totalling 5,573 carats of diamonds achieved total revenues of $ 10 m , achieving an average price of $ 1,800 per carat . Lulo mining company Sociedade Mineira Do Lulo ( SML ) has produced high carat stones which include the rare IIa D - colour diamond as well as the 46-carat pink stone found earlier this year . SML plans a 50 % increase in plant at Lulo , to bring throughput to approximately 450,000 m3 by 2020 .
Sales of Angola's Lulo mine diamonds in the first half of 2019 were $22.1m, achieving an average price per carat of $3,668, making Lulo the world’s highest-average-price alluvial diamond producer. Parcels totalling 5,573 carats of diamonds achieved total revenues of $10m, giving an average price of $1,800 per carat. Lulo mining company Sociedade Mineira Do Lulo (SML) has retained high carat stones which include the 130 IIa D-colour diamond as well as the 46-carat pink stone found earlier this year. SML plans a 50% increase in plant at Lulo, to bring throughput to approximately 450,000 m3 by 2020.