我通过k - 12教育不断被告知,钻石是一个产品的碳,时间、压力和温度。如果这是真的,什么是阻止人构建一个高压,高温系统和倾销石墨,使数以百万计的钻石吗?

看来我这里列出准确的策略是:https://en.wikipedia.org/wiki/Synthetic_diamond High_pressure.2C_high_temperature。但这是在文章“人造金刚石”。How can one tell a difference between a synthetic diamond and a "real" diamond? What is stopping someone from making these HPHT machines and making tons of money?