Petra Diamonds Ltd. announced today that a 507-carat piece of rough unearthed at its Cullinan mine in September sold for $35.3 million, the highest sale price on record ever achieved for a rough diamond.

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Petra Diamonds Ltd. announced today that a 507-carat piece of rough unearthed at its Cullinan mine in September sold for $35.3 million, the highest sale price on record ever achieved for a rough diamond.

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When the JA New York Winter Show opens at the Jacob K. Javits Convention Center this Sunday, jewelers who are there to replenish their showcases post-holiday will also have a chance to take advantage of a full plate of educational offerings and seminars where they can share ideas with peers.

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A 5.16-carat fancy vivid blue diamond that is internally flawless and was once part of the De Beers’ famed “Millennium Jewels Collection” will lead the spring sale for Sotheby’s Hong Kong.

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After a difficult year, predicting that 2010 is going to be an improvement for the diamond industry isn’t saying much. But it may come as a relief to some retailers who have been sitting on piles of diamond hoops and bangles.

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SimplexDiam, a New York-based jewelry company that specializes in the purchase of closeout inventory, recently bought $11 million in goods from a liquidated jewelry chain based in Ohio. 

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The Jewelers Resource Bureau (JRB) is inviting jewelry designers to attend the Designer CEO Summit, a designer-geared event intended to inspire creative-minded artisans to develop effective business strategies for running their own companies.

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Depeche Mode fans just couldn’t get enough at a charitable auction of Hublot “Big Bang” timepieces bearing album artwork from the famed British band.

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Sales plummeted 44 percent in 2009 for moissanite manufacturer Charles and Colvard, with executives saying the poor economy prompted its retail partners to stop buying jewelry made of the lab-created gem.

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Marketers who have climbed aboard social media sites like Facebook or Twitter hoping to generate sales would be better off using the sites to solicit feedback from affluent luxury consumers, a new Unity Marketing study suggests.

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