In an in-depth analysis, Rapaport's Avi Krawitz maps who is buying rough from the four main diamond producers, De Beers, Alrosa, Rio Tinto and Dominion Diamonds, combined accounting for an estimated 60% of global rough supply. The rough market is currently stable with better sales results and improved margins for the midstream, Krawitz adds, largely due to the fact long-term contract based suppliers are setting the tone with stable supply and rough prices. The comprehensive list of long-term contract holders counts 135 companies, up from 127 named last year. Of the total, 43 companies are headquartered in India (the largest manufacturing center), 41 in Belgium (the major rough trading hub), 14 in Israel, 10 in Russia, nine in the U.S., five in Hong Kong, three in the United Arab Emirates (UAE), two each in Canada, Japan and South Africa, and one each in the UK, Mauritius, Namibia and Switzerland. The full list can be found here.