Assume US$130 ct
sorthouse material had 3.4cts in a 196kg sample
= 1,734 carats per hundred tonne
there are 10,000 tonnes of sorthouse material
= 17.34ct/t X US$130 X 10,000t
= US$22M
"52 diamonds weighing 3.4cts from a 196kg sample of previously sorted Merlin sorthouse reject material. All diamonds were of commercial size with the two largest diamonds weighing 0.47cts and 0.43cts respectively."