Rough diamond revenue, volume and price increased in the first quarter Alrosa reported. Alrosa sold 6.1 million carats of gem quality rough at an average $183.9 per carat, a 5 percent increase in price.
 
The Russian diamond giant's supply to the market was slightly up year-over-year. Compared to the fourth quarter of 2011, sales volume increased 60.5 percent.

Revenue from rough diamond sales increased 27 percent to $1.05 billion (34.5 billion rubbles).

Gem-quality diamonds accounted for 64 percent of total sales volumes in carats and 98 percent in value.

Alrosa credited the results to strong performance on the back of stable production.

IDEX Online News