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Diamonds are the hardest material on earth: 58 times harder than anything else in nature. Fifty light years from earth, this star is a 10 billion-trillion-trillion carat diamond. The average yield in most …

Nov 19, 2025 · A diamond is a mineral composed of pure carbon. It is the hardest naturally occurring substance known; it is also the most popular gemstone. Because of their extreme hardness, …

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Lab-grown diamonds are environmentally friendly and cost-efficient. They undergo the same processing and grading standards as mined diamonds, based on the 4Cs of diamond certification.