More Info I have found out that typically, fancy yellow diamonds are valued at two to four times the price of a white diamond of a similar size and quality.
With 21% yellow diamonds, the price per carat will be 2-4 times that received by Mountain Province .
This greater price will nullify the greater density of diamonds per ton at MOs Diamond mine.
I think $200 per carat is a reasonable price to be assumed and 2.5 million carats per year which ball parks annual revenues of about $500 million cad per year, with a lower range of $350 million and upper range of $650 million.
Very rough indeed but best possible right now..