

Henan Province in Central China has been in the limelight recently. Centred around Shangqiu, Xuchang, and Zhengzhou, Henan has gradually developed the world’s most complete and efficient synthetic diamond industry chain.
The companies here do not rely on mining but use high-pressure, high-temperature (HPHT) or chemical vapour deposition (CVD) methods to ‘grow’ lab-grown diamonds that are purer and cheaper than natural diamonds in just a few weeks.
By 2025, China had captured nearly 70% of the global rough lab-grown diamond production, with over 90% produced in Henan. The global retail price of lab-grown diamonds has averaged a decline of over 60% in the past five years. A 1-carat diamond ring that once sold for over ten thousand yuan can now be bought on e-commerce platforms for just two to three thousand yuan, offering the same appearance or even higher clarity.
As of now, in early 2026, Anglo American plc is planning to sell its 20% to 30% stake in De Beers, and the likely buyer is a sovereign African nation.