The Rapaport Group says the world's largest diamond miner does not allow clients to disclose the source of their gemstones, except with De Beers' prior written consent.

Diamond market sentiment improved in January, with firm prices after retailers reported a better-than-expected holiday season.

Rio Tinto reported that its diamond sales rose 7 percent year on year to $727 million in 2011. The increase came as rough prices improved 24 percent during the year despite some softening towards the end of the year, thus compensating for the decline in Rio Tinto’s annual production.

RAPAPORT... The Antwerp Diamond Bourse, the Diamantclub of Antwerp and the Antwerp World Diamond Centre (AWDC) announced the dates for their third edition of the Antwerp Diamond Trade Fair. This invitation-only event will be held January 29 through

Indian diamond dealers maintained a positive outlook for the market despite softer than expected loose diamond trading at the India International Jewellery Show (IIJS) as finished jewelry sales were strong. Most traders who spoke with Rapaport News agreed that loose diamond trading was down compared to IIJS 2010 largely due to the rise in gold and diamond prices which have taken effect in the past year.

Surat diamond trading houses and safe deposit vaults will closed for one day on Friday (July 29) in a campaign to increase air travel to the city, the Surat Diamond Association (SDA) stated. “Air connectivity is very important for us and we

Zimbabwe’s diamond production reached 2.329 million carats in the first half of 2011 with the bulk coming from the controversial Marange fields, Finance Minister Tendai Biti reported to Parliament on Tuesday. The Treasury expects production to ramp up in the second half to reach 8.2 million carats for the full year, which would be slightly lower than the 8.435 million carats mined in 2010.