Diamonds, once revered as a symbol of "eternal value" and commanding the highest prices among gemstones, are seeing their value collapse. Unlike gold prices, which have more than doubled over the past ...

On Jupiter and Saturn, half-inch diamonds fall from the atmosphere like rain. No, this writer isn't enjoying a particularly opulent LSD trip: New research by a NASA scientist says that up to 1,000 ...

Jewelers know how difficult it has become to sell diamonds in a market split between mined and laboratory grown gems, but that’s a modest challenge compared with selling the world’s premier diamond ...

LONDON — De Beers Group, which rocked the industry when it launched its Lightbox jewelry made from lab-grown diamonds, is shutting the business. The diamond miner and jeweler said it planned to shut ...

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