2024-09-12 902词 中等
Since then, diamond-making technology has advanced significantly. Today, there are two primary methods for creating lab-grown diamonds: the HPHT process and chemical vapor deposition (CVD). Both types of machines are now listed on Alibaba, with prices starting at around $200,000, as pointed out by engineer John Nagle (who goes by "Animats" on Hacker News). A CVD machine we found is more pricey, at around $450,000.
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