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A trader claims that diamond selling methods are outdated and harm producers.

A trader claims that diamond selling methods are outdated and harm producers.

A leading gem trader stated on Thursday that the sale of diamonds via tenders and auctions was opaque and inefficient. It should be redesigned to help producers earn more money and survive the current price drop.

Oded Mansori is the co-founder and managing director of Belgian gem trading company HB Antwerp. He said that inefficiencies within the industry could reduce the impact on the producers.

Diamond demand is suffering from global economic uncertainty, and lab-grown diamonds are becoming more popular.

Lower revenues have led to the layoff of workers in mines such as Burgundy, and Lesotho’s largest diamond mine Letseng.

"For years, miner's relied on auctions and tenders. Systems that appear efficient on paper, but in reality resemble a gambling casino," Mansori stated in a press release, as the mining industry struggles with a crisis thought to be its worst in history.

"Rough stones will be pushed onto opaque markets, where the value of these stones is hard to estimate. Producers are exposed when global demand softens as it has done in cycles during the past decade. "Workers pay the price while shareholders watch their assets decline," said he.

Rough diamonds can be sold by a system of competitive bidding, whereby buyers make confidential bids for individual stones or parcels.

Mansori's company, which operates a profit sharing model with miner Lucara Diamond Corp., believes that producers should tie their revenues to the final polished value of their stones, "rather gambling on rough sales at opaque auctions".

HB Antwerp, in partnership with Lucara and the Toronto-listed firm's Karowe Mine located in central Botswana, purchases stones above 10.8 carats at prices based upon the estimated polished value for each diamond.

HB Antwerp accounted 72% of Lucara’s $74 million in diamond revenues for the six-month period ending June 30. This is up from 65% a year earlier.

The trader claims that producers can make up to 40% extra revenue by using this model. (Reporting and editing by Nelson Banya, Frances Kerry and Brian Benza)

(source: Reuters)