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Carbon: Facts about an element that is a key ingredient for life on EarthReference Carbon is one of the most abundant elements and forms a very large number of compounds, including carbon dioxide, carbon monoxide and carbon disulfide.
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55-sided, 555-carat 'Enigma' black diamond (potentially from space) goes on saleThe black diamond known as the "Enigma" will soon be sold at auction, but experts are unsure about the origins of the stunning gem.
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Diamonds: Formation, grading and other factsReference Diamonds are unique among gemstones, with intriguing physical properties and practical applications far beyond jewelry.
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Diamond hauled from deep inside Earth holds never-before-seen mineralResearchers have discovered a new mineral from deep within Earth's mantle; it was trapped inside a diamond and brought to the surface.
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Lab-made hexagonal diamonds are stronger than the real thingThe scientists used a soundwave and a laser beam to measure the diamonds before they disintegrated.
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Diamonds need an electric zap to crystallize deep inside EarthA lab experiment mimicking mantle conditions revealed how diamonds need an electric field to grow.
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Can diamonds burn?With enough heat and oxygen, diamonds will burn.
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Hope diamond formed stunningly close to Earth's coreMost diamonds originate at the bottoms of tectonic plates. But the giant blue Hope and Cullinan diamonds may have originated far deeper within the planet.
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Piece of lost continent discovered beneath CanadaA type of rock from Earth's interior that's known for its embedded diamonds also holds clues to a missing puzzle piece from a continent that fragmented more than 150 million years ago.
