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Diamonds were first synthesized in the 1950's using the (HPHT) high-pressure, high temperature process. The (CVD) chemical vapor deposition process was later developed and produces many of the high-quality synthetic diamonds in today's market.
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2021-9-3 · History Of CVD Diamonds. About a decade ago, CVD synthetic diamonds began to appear on the gemstone diamond market. 1954, two years before HPHT synthesis was announced, a patent was issued for another type of diamond growth: the CVD process. Early reports of gem-quality CVD synthetic diamonds were questioned and not confirmed until years .
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By 2014, near colorless gem quality synthetic diamonds grown by the HPHT process were still more costly than natural diamonds of equal quality, and CVD grown diamonds were approximately equally priced to natural diamonds. Yellow .
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