RE: $150/CT ?Here's sample of price averages/country.
Producing
Country Carats(000), Average Price per carat(US$), Value(US $Billion)
Botswana 30,412 82 2.49
Russia 19,000 84 1.60
Canada 11,200 111 1.24
Angola 6,300 175 1.10
South Africa 12,400 89 1.10
D.R. Congo 29,000 24 0.86
Namibia 1,550 306 0.47
Australia 0,994 13 0.42
Cheers, Mark