Belgium, which is the largest center for trading precious stones in the world, purchased rough diamonds worth $4.36 billion for the period from January to June, which is 26% less than the same period last year. Diamond imports by volume fell 19.6% to 39.734 million carats, Antwerp World Diamond Center reported. In June, 7.28 million carats of diamonds were delivered to Belgium, which is 8.5% less than a year earlier. In monetary terms, the decline in imports was 21.2%. The cost of one carat of imported rough diamonds in June averaged $93.46. A month earlier, the figure was at 135.6 dollars. At the same time, the average price of diamonds supplied to the world market from Belgium dropped to 84.9 dollars from 110.6 dollars per carat in the previous month.