Diamond hunt elusive for frustrated Rio Tinto

• Even for the deepest pockets in the mining industry, diamonds are hard to find.

Rio Tinto Group chief executive officer Jean-Sebastien Jacques said this week he’s on the hunt for new diamond mines, but with more than half of the industry controlled by just two companies and new discoveries rare, it’s going to be a tall order.

“There’s not a great deal available,” said Des Kilalea, an analyst at RBC Capital Markets in London. “It’s got to be big, but there are not a lot of those.”

Jacques, who became CEO of the world’s secondbiggest miner in July, called diamonds a priority area in a Bloomberg Television interview Tuesday. The strategy, part of a drive to improve the quality of Rio’s mining assets, marks a turnaround for the company that mulled exiting the diamond business just three years ago.

As one of the world’s top producers of rough gems, Rio operates the large Argyle mine in Australia, which produces low-quality stones, and has a controlling stake in a Canadian mine. The question is where to find new supply.

“Rio might look for a trophy producer,” said Jeremy Wrathall, head of commodities research at Investec Plc in London. “It’s an attractive place to be. The world is running out of diamonds, it’s not running out of iron ore or copper.”

One place to start could be Anglo American Plc’s De Beers unit. The world’s biggest producer controls some of the most attractive mines. The problem is that Anglo would be unwilling to sell the business because diamonds are a core focus of its future, along with platinum and copper.

The alternative could be to attempt to buy Anglo outright, but that would involve inheriting many mines Rio is unlikely to want. It may also be put off by a clause in De Beers’s agreement with Botswana, the source of threequarters of its carats. The provision allows the nation to renegotiate the accord if the ownership of De Beers changes.

At t he moment, Rio’s earnings f rom i ron ore, aluminum and copper dwarf profits from mining diamonds.

“The diamond business has long been seen as a good business in the mining industry and a source of demand that is uncorrelated to building bridges,” said Paul Gait, an analyst at Sanford C. Bernstein Ltd.

“Rio, like most mining companies, is very heavily exposed to the early cycles of industrialization and perhaps less exposed to the later cycles of wealth creation as economies mature.”

Another place to grab a bigger share of the diamond world would be Canada, where Rio owns a 60 per cent stake in the Diavik mine. It could either buy the remaining share from Dominion Diamond Corp., or acquire Dominion, which also runs the neighboring Ekati mine.

Rio put a proposal together last year to buy the Diavik stake and a smaller development project, but it was rejected internally before reaching board level, according to two people familiar with the deal. A spokesman for Rio declined to comment, as did a spokeswoman from Dominion.

The other t wo major mines in Canada — Gahcho Kue and Victor — are owned or controlled by De Beers. They may also be out of reach because the Anglo unit doesn’t want to risk having all of its assets in southern Africa, where the rest of its projects are.

Another option would be to buy Mountain Province Diamonds Inc.’s 49 per cent stake in Gahcho Kue.

The company said it’s received unsolicited expressions of interest from third parties in the past, but confidentiality agreements mean it can’t disclose their identity.

That really only leaves a handful of smaller producers, such as Petra Diamonds Ltd., Lucara Diamond Corp. and Gem Diamonds Ltd.

Their mines are unlikely to make a material impact in Rio’s business or meet the company’s ambition to operate so- called tier- one assets. Sales from Petra’s biggest mine totalled US$ 186 million last year, while Gem’s revenue was US$ 250 million.