http://j.people.com.cn/n3/2024/0816/c95952-20206929.html
Natural diamonds take 100 million years to form in a high-temperature, high-pressure environment hundreds of kilometers underground.
In a diamond “breeding” workshop in the county, transparent diamonds were created through a series of processes, including seed crystal planting, deposition, slicing, and etching. According to an engineer, when carbon gas is electrolyzed using ion vapor deposition methods such as microwaves, hydrogen is released as gas. Carbon is deposited layer by layer on the seed crystal at a rate of 6 to 10 micrometers per hour, forming an even diamond layer. In this way, a one-carat rough diamond is completed in about 600 hours. Approximately 100 carats of diamonds can be grown per month in one container cultivation workshop.
Artificially grown diamonds are zero pollution and zero emissions, but they consume a lot of energy. To grow a 40-carat artificial diamond, a 28-kilowatt (kW) facility needs to operate continuously for 600 hours, consuming approximately 16,800 kilowatt-hours (kWh) of electricity. Weichang Manchu Mongolian Autonomous County has an annual effective wind power of 5,475 hours and an average annual sunshine of 3,000 hours. With abundant wind and solar power resources, the county is seeking to attract businesses that use clean energy.