China's Cultivation Of Diamonds Continues To Break The Western Monopoly Structure
Jul 30, 2025
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China's technological breakthroughs and capacity expansion in cultivating the diamond industry have completely overturned the pricing system and market structure of the global diamond industry. This change not only shattered the "scarcity myth" constructed by the West over the past century, but also reconstructed the value distribution of the industrial chain.
1, Technological monopoly: How China controls the lifeline of global diamond production
The dominant position of HPHT technology is that China (especially Zhecheng, Henan) concentrates 90% of the world's high-temperature and high-pressure (HPHT) diamond production capacity. This technology can produce 1 carat D-color VVS grade diamonds in 7 days at a cost only 1/10 of natural diamonds. Jilin University and Sun Yat sen University have published research results on "Super Diamond" in Nature Materials, breaking through the synthesis technology of hexagonal diamond and further consolidating their leading advantage.
The entire industry chain is independently controllable, from six sided top press equipment to graphite raw material processing, achieving closed-loop production in China. The annual production capacity of Zhecheng County in Henan Province reaches 4 million carats, accounting for 35% of the total global cultivated diamond production, directly rewriting the power structure of the global supply chain.
2, Price shock: How China's production capacity is disintegrating the Western pricing system
Supply side: Capacity crushing breaks the lie of scarcity
De Beers' predicament: inventory backlog exceeding $2 billion in 2024, forced to reduce prices by 25% twice, natural diamond prices plummeting by 40%, market value evaporating by $4.5 billion, and market share plummeting from 35% to 17%.
Global production comparison: In 2024, the global production of cultivated rough diamonds reached 29.8 million carats (with China accounting for 70%), while the exploration budget for natural diamonds shrank to 20% of 2007.
Demand side: Consumer Cognitive Revolution
Cost effectiveness drives the choice: 1 carat D-color VVS cultivated diamond is priced at 6000-8000 yuan (natural diamonds cost about 60000-80000 yuan), and consumers with the same budget can choose 4 carat cultivated diamonds instead of 1.25 carat natural diamonds.
The rise of ethical consumption: 82% of young people believe that "technological innovation value is higher than resource scarcity", and the carbon emissions of cultivated diamonds are only 1/5 of natural diamonds, which is in line with the trend of carbon neutrality.
3, Profit Model: The "Small Profit, High Sales" Strategy of Chinese Enterprises
Upstream: Profits still exist, with a gross profit margin of over 80%. Diamond and other manufacturers rely on technological barriers to achieve a gross profit margin of 83.44%. Due to the cost dilution of large-scale production, the manufacturing cost of one carat bare drill is only 3000 yuan, a 90% decrease from 2018.
Downstream brands: high turnover rate replaces high premium
Emerging brands such as Zhegang have a gross profit margin of 60% and a net profit margin of 20%, achieving a monthly sales growth of 400% through e-commerce and customized services.
International orders surge: Zhegang's overseas customization demand has increased tenfold, with American and Saudi customers using Chinese friends and family to "purchase" on their behalf.
4, Strategic choice: Why not monopolize profits? The logic of inclusive technology dividends
Expand market share, squeeze Western giants China's proactive maintenance of low prices (such as 5-carat cultivation diamonds priced below 100000 yuan, only 30% of HW and other brands), and accelerate the consumer market's "defection". In 2024, the market share of cultivated diamonds in China soared from 6.7% to 13.8%, and Bain predicts that the global cultivated diamond market size will exceed 18 billion US dollars by 2025.
Technology spillovers to the industrial sector, creating incremental markets
High end manufacturing applications: nitrogen doped diamonds are used for semiconductor heat dissipation, boron doped diamonds are used for quantum computing, promoting China's voice in the field of new materials.
Export structure optimization: Among the 58% export share of cultivated diamonds in China, the proportion of industrial diamonds has been increasing year by year, breaking the limitation of a single jewelry scene.
To avoid policy risks and trade barriers, the US FTC included cultivated diamonds in the diamond category in 2018, but the West still suppresses them with an "environmental premium". China has forced industry standards to be restructured through a low price strategy, rendering De Beers' 'real is diamond' marketing completely ineffective.
5, Future Challenge: The Key Path to Sustainable Profitability
To avoid price wars and internal competition, the current low gross profit and high turnover model relies on continuous expansion of production, but supply chain integration (such as the Henan government's "Superhard Materials Industry Development Plan") is expected to enhance cluster effects and reduce the risk of vicious competition.
Upgrading brand value from "production capacity output" to "cultural output": Zhegang has launched DNA commemorative diamonds (synthesized from fetal hair/ashes) and replicated Sotheby's auction grade jewelry, meeting emotional consumption needs and achieving single orders exceeding one million.
Technological intergenerational leading R&D investment is tilted towards CVD (chemical vapor deposition) method, breaking through large carat (>10ct) color drilling technology and consolidating global pricing power.
Conclusion: The profound significance of China's diamond revolution lies in the strategic choice of "trading scale for hegemony" where China monopolizes technology but does not enjoy exclusive profits
Short term: By crushing the Western price system through production capacity, natural diamonds have become niche luxury goods;
Long term: Build a multidimensional profit ecosystem through industrial applications and brand upgrades, and transform 'Kra Freedom' into a global industrial chain control force.
Just as De Beers' inventory of diamonds is covered in dust in its London vault, the laser cutting machine in the Henan workshop is recasting carbon crystals from a "scarcity symbol" to a "Made in China" technology badge at a rate of tens of thousands of carats per day. This dimensionality reduction strike that began in the laboratory is not only a change in industrial power, but also a rational deconstruction of resource monopoly capitalism.
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