of 4-5%

http://articles.economictimes.indiatimes.com/2013-02-05/news/36764792_1_diamond-prices-diamond-exports-rough-diamonds

 

diamond companies increasing prices for rough

http://articles.timesofindia.indiatimes.com/2013-01-28/surat/36595152_1_rough-diamonds-medium-diamantaires-alrosa