Editor’s Note
This article presents a market projection from a recent industry conference in China, forecasting significant growth for the country’s lab-grown diamond sector. The views expressed are those of the cited expert.
At the recently held “2025 Lab-Grown Diamond Industry Conference” in Zhengzhou, Henan Province, China, Zhang Jie, Dean of the Henan Zhongyuan Jewelry Innovation Industry Research Institute, a research institution specializing in the jewelry industry, presented an outlook on China’s lab-grown diamond market. He stated that while the current market size is approximately 14 billion yuan (about 308 billion yen), it is expected to exceed 102.5 billion yuan (about 2.255 trillion yen) by 2030, becoming a rapidly expanding blue ocean.
He anticipates that by 2030, China will see the emergence of over 10 well-known lab-grown diamond brands, 1-2 global brands, and 3-5 industrial brands, forming a preliminary global layout for the lab-grown diamond brand sector.
As the birthplace of China’s superhard materials industry, Henan boasts over 60 years of technological accumulation and accounts for about 80% of the nation’s lab-grown diamond production capacity. The industry conference brought together leading companies from the province, such as Henan Sifangda Superhard Materials, Henan Huanghe Whirlwind, Zhongnan Diamond, Henan Power Diamond, and Huifeng Diamond, to discuss the high-quality development of the lab-grown diamond industry.
Henan is a crucial production base for lab-grown diamonds in China. Its production volume in 2024 approached 25 million carats, making it a significant global supply hub. The global lab-grown diamond market size exceeded $15 billion (about 2.34 trillion yen) in 2024, with an average annual growth rate surpassing 15%. China contributes the majority of the world’s lab-grown diamond rough production, with Henan alone accounting for over 80% of China’s output. Zhengzhou is a primary production area for synthetic diamonds, having formed a complete industrial chain from superhard materials to lab-grown diamonds. Over 100 companies are clustered there, accounting for about 30% of the national production volume, with an industrial scale exceeding 15 billion yuan.