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As a result of experiments on diamond crystallization and annealing, diamond crystals with graphite inclusions were produced. Crystallization of diamond was realized in dry and water-containing chloride, carbonate and silicate systems at P=5.7–7.5 GPa and T=1400–1800 °C using high-pressure equipment of “split-sphere” type. Annealing of diamond crystals in the field of thermodynamic stability of graphite...
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