About Sylvain Goldberg

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So far Sylvain Goldberg has created 90 blog entries.

Clarifying What Makes a Diamond

Diamonds have fascinated generations with their natural origin, beauty, durability and value: finite, billion-year old gemstones. More than just chemicals, diamonds involve preciousness, authenticity and heritage. Just as one cannot compare an original painting to a reproduction, one cannot compare a diamond to a manufactured replica.

Blue Diamond Sells for $15M at Sotheby’s New York

Sotheby’s sold $54 million worth of jewelry at its New York auction on Tuesday as several pieces containing rare blue diamonds and gemstones yielded higher-than-expected prices.

Omega Diamonds acquitted in lawsuit by Belgian customs

Claims against Omega Diamonds by customs dismissed

Black Friday sees Online Sales Surge

Online spending hit record levels on Black Friday, while robust sales at brick-and-mortar retailers indicated the shopping bonanza’s traditional side is not dead yet.

Debmarine Splashes $142M on Diamond Ship

De Beers is planning to add the world’s largest custom-built diamond-mining vessel to its fleet at a cost of $142 million.

Sylvain Goldberg on the alpha and omega of the diamond industry

The Alpha and Omega of the diamond business history and some savvy expertise

Largest Round Diamond Ever at Auction

On Dec. 17 in New York City, Sotheby’s will offer what it calls the largest round diamond ever sold at auction—and at 110.92 carats, it’s hard to argue.

Belgium Sees Jump in Polished Diamonds Exports

Belgium’s polished diamonds exports grew in October, according to data the Antwerp World Diamond Centre (AWDC) released this week.

Grand Mazarin – Diamond in the crown

On 14 November in Geneva, one of France’s most storied gems comes to auction at Christie’s. Here we look back on the singular history of the Grand Mazarin, a diamond with three centuries of royal provenance.

Alrosa Finds 34ct. Yellow Diamond

Alrosa has recovered a 34.17-carat fancy vivid yellow rough diamond in northeastern Russia, the miner’s largest fancy-colored stone this year.