To explain why the production process makes lab grown diamonds cheap cheaper and better for the environment and society, we will delve into the exact way that mined diamonds are extracted and the exact way that synthetic diamonds are produced. The diamond seed is first placed in pure graphitic carbon and exposed to extreme heat of over 2,700 degrees Fahrenheit (1,500 degrees Celsius) and crushing pressure of 1.5 million pounds per square, then the pure carbon surrounding the seed melts. Finally, it is cooled and forms a diamond shape around the starting seed.