US mines produced an estimated $74.6 billion in minerals last year

VANCOUVER, Sept. 6, 2011 /CNW/ - Rockwell Diamonds Inc. ("Rockwell" or the "Company") (TSX: RDI) (JSE: RDI) (OTCBB: RDIAF) announces that its board of directors has approved the capital investment to install high throughput (or bulk) x-ray technology at Saxendrift. This represents another positive step in implementing and entrenching its diamond value management programmes which are focused on sustainably enhancing diamond recoveries.

The DRC's Ambassador to Belgium says the country wants to ramp up diamond production and become a "continental hub" for the precious stones. In an interview with Rapaport Magazine, Henry Mova said the country could become an entrepot for Africa-sourced diamonds. His comments were made following the graduation of 15 Congolese citizens from the International Gemological Institute’s (IGI) School of Gemology in Antwerp.

Commodity markets were hit this week by shock news that the United States created no jobs in August, sparking speculation that the world's biggest economy could be heading for a double-dip recession. Analysts said the data bolstered expectations that the US Federal Reserve could soon decide to implement another round of quantitative easing -- dubbed QE3 by traders -- to help breathe new life into the struggling economy.

Business Day reports De Beers expects its South Africa unit to produce 6.5 million carats this year, 1 million less than last year as the effects of mine disposals filter down. De Beers has since 2007 sold several of its South African mines including Cullinan, Jagersfontein, Namaqualand and Finsch. The board is expected to sign a potential R15bn ($2 billion) investment to extend the life of its flagship Venetia mine when a feasibility study ends next year – it would be the company’s biggest South African investment in decades.

Valued at twenty times the price of a white diamond, pink diamonds are also extremely rare with only around 50 or so put out to tender each year. Pink diamonds comprise 0.03 per cent of global diamond production and 90% come from the remote Argyle mine in Australia, owned by Rio Tinto. For every million carats of rough diamonds produced at Argyle, less than one carat will be suitable for the tender which this year will include the three-heart shaped Argyle Semper Suite (pictured).

London-listed Gem Diamonds announced Wednesday it has found the world’s 15th largest white diamond at its Letšeng Mine in Lesotho, which is fast-becoming the richest source of large diamonds in the world. The company  said the type II D 553 carat colour diamond diamond is being analyzed in Antwerp at the moment and has not been named.  Without the occasional large diamond find, the Letšeng pipe would probably be a marginal deposit, but the mine, 30% owned by the King of Lesotho, has also yielded the 603 carat Lesotho Promise turned into a $12.4 million necklace (pictured). The 493 carat Letšeng Legacy sold for $10.4 million in 2007 and the 478 carat Light of Letšeng went for $18.4 million in 2008.

Russia's government-owned diamond producer is reporting sales of rough and polished diamonds of $2.2 billion for the first half of 2011.

Interfax reports Russia state-owned diamond miner Alrosa is up 22% on the country's trading board for unlisted stocks since it was first quoted there on July 18. The price of US$31,495 per share, implies a market value of $8.6 billion. Alrosa accounts for around 25% of world output and for the full year sales of $4.7 billion is expected. The secretive firm has been feeding the market more information recently in anticipation of a 2012 public offering that seeks to raise up to $3 billion.

24/7 Wall St says the global diamond mining industry may be one of the world’s best-kept secrets and diamond mining is not unlike the oil business, where about 100 massive fields supply about half the world’s oil.