The Global Single Crystal Diamond Market was valued at US$ 1462.1 Million in 2022 and is projected to reach US$ 1989.5 Million by 2029, growing at a Compound Annual Growth Rate (CAGR) of 4.5% during the forecast period (2023–2029). This growth is fueled by escalating demand for high-performance materials in precision machining, advanced electronics, and optical applications, alongside the accelerating adoption of Chemical Vapor Deposition (CVD) and High-Pressure High-Temperature (HPHT) technologies for producing superior-quality synthetic diamonds.

As global industries push the boundaries of material science for enhanced efficiency and durability, the spotlight intensifies on the key manufacturers who are driving innovation, scaling production, and expanding the applications of this exceptional material. In this blog, we profile the Top 10 Companies in the Single Crystal Diamond Industry—a mix of established industrial giants, specialized material science leaders, and innovative producers shaping the future of advanced materials.

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🔟 1. Element Six

Headquarters: Luxembourg, Luxembourg
Key Offering: HPHT & CVD Single Crystal Diamonds

Element Six, a member of the De Beers Group, is a world-leading authority in the design, development, and production of synthetic diamond supermaterials. The company supplies high-purity single crystal diamonds for a vast array of demanding industrial, scientific, and technological applications, from cutting tools to quantum sensing.

Innovation & Technological Edge:

• Pioneering research in both HPHT and CVD diamond growth technologies

• Development of diamond for next-generation electronics and sensors

• Strong focus on material purity and tailored properties for specific high-tech applications

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Single Crystal Diamond Market – View in Detailed Research Report

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9️⃣ 2. Zhongnan Diamond Co., Ltd.

Headquarters: Zhengzhou, Henan, China
Key Offering: HPHT Single Crystal Diamond

Zhongnan Diamond is the largest manufacturer of single crystal diamond globally, commanding approximately 23% of the market share. As a subsidiary of China National Building Materials Group (CNBM), it leverages significant industrial backing to mass-produce high-quality diamonds primarily for abrasive and cutting tool applications.

Innovation & Technological Edge:

• Dominant position in the HPHT diamond production segment

• Massive production scale serving domestic and international markets

• Continuous investment in optimizing production efficiency and crystal quality

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8️⃣ 3. Sumitomo Electric Industries, Ltd.

Headquarters: Osaka, Japan
Key Offering: SUMIDIA® CVD & HPHT Single Crystal Diamonds

Sumitomo Electric is a diversified global technology leader with a formidable presence in advanced materials. Its SUMIDIA brand is synonymous with high-performance synthetic diamonds used in cutting tools, wear-resistant parts, and sophisticated electronic components.

Innovation & Technological Edge:

• Comprehensive portfolio covering both CVD and HPHT diamond products

• Strong R&D focus on diamond applications in thermal management and power electronics

• Integration of diamond materials into finished tools and components for end-users

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7️⃣ 4. ILJIN Diamond Co., Ltd.

Headquarters: Seoul, South Korea
Key Offering: HPHT Single Crystal Diamond, Diamond Wheels

ILJIN Diamond is a key South Korean manufacturer renowned for its high-quality synthetic diamonds and diamond tools. The company serves the global market with products essential for precision grinding, cutting, and drilling across various heavy industries.

Innovation & Technological Edge:

• Expertise in producing consistent, high-strength HPHT diamonds for industrial tools

• Vertically integrated operations from diamond synthesis to finished tool manufacturing

• Strategic focus on the semiconductor and automotive supply chains

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Single Crystal Diamond Market – View in Detailed Research Report

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6️⃣ 5. Huanghe Whirlwind Co., Ltd.

Headquarters: Zhengzhou, Henan, China
Key Offering: HPHT Single Crystal Diamond, Cubic Boron Nitride (CBN)

Huanghe Whirlwind is one of China’s major producers of synthetic diamond and CBN abrasives. The company has a strong manufacturing base and plays a significant role in supplying the domestic and Asian markets with materials for construction, machining, and stone processing industries.

Innovation & Technological Edge:

• Significant production capacity for HPHT synthetic diamond

• Diversified product range including both diamond and CBN superabrasives

• Focus on cost-effective production for price-sensitive market segments

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5️⃣ 6. Zhengzhou Sino-Crystal Diamond Co., Ltd.

Headquarters: Zhengzhou, Henan, China
Key Offering: Large Carat HPHT Single Crystal Diamonds, Diamond Grits

Zhengzhou Sino-Crystal specializes in the production of large-carat HPHT single crystal diamonds, catering to both industrial and gemological markets. The company has developed expertise in growing larger, high-clarity diamonds suitable for specialized technical applications and jewelry.

Innovation & Technological Edge:

• Specialization in producing larger, gem-quality HPHT single crystals

• Bridging the gap between industrial and jewelry-grade synthetic diamond markets

• Continuous improvement in crystal size and quality control processes

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4️⃣ 7. CR GEMS Diamond Co., Ltd.

Headquarters: Zhengzhou, Henan, China
Key Offering: HPHT Single Crystal Diamond, Diamond Powder

CR GEMS Diamond is a prominent Chinese manufacturer focused on the synthesis and distribution of HPHT single crystal diamonds. The company supplies diamond grits and powders to various downstream industries that require ultra-hard materials for abrasive and precision machining applications.

Innovation & Technological Edge:

• Strong presence in the HPHT diamond grit and powder market

• Focus on consistent particle size distribution and material purity

• Strategic positioning within the concentrated Chinese manufacturing ecosystem

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3️⃣ 8. New Diamond Technology

Headquarters: Saint Petersburg, Russia
Key Offering: Large HPHT Single Crystal Diamonds

New Diamond Technology (NDT) is a Russian pioneer renowned for growing some of the world’s largest HPHT synthetic diamonds. The company has gained recognition for producing record-breaking large crystals suitable for high-power electronics, optical windows, and scientific research applications.

Innovation & Technological Edge:

• World-leading capability in producing very large single crystal diamonds via HPHT

• Focus on R&D for diamonds in extreme environment applications

• Collaborations with scientific institutions for advanced material research

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2️⃣ 9. Applied Diamond, Inc.

Headquarters: Wilmington, Delaware, USA
Key Offering: CVD Single Crystal Diamond, Diamond Coatings

Applied Diamond is a US-based company specializing in CVD diamond technology. It provides high-quality single crystal and polycrystalline diamond materials for demanding applications in optics, electronics, and detector systems, serving defense, research, and industrial sectors.

Innovation & Technological Edge:

• Expertise in high-quality CVD diamond deposition

• Focus on optical-grade and electronic-grade diamond products

• Strong relationships with North American research and defense organizations

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1️⃣ 10. IIa Technologies Pte. Ltd.

Headquarters: Singapore
Key Offering: High-Purity CVD Single Crystal Diamond

IIa Technologies was a notable pioneer in the CVD diamond space, known for producing large, high-purity Type IIa diamonds for optical, thermal, and electronic applications. The company’s technology focused on scaling CVD processes to produce diamonds with exceptional optical and thermal properties.

Innovation & Technological Edge (Historical):

• Leadership in scaling up CVD diamond production for large-format optical applications

• Production of high-quality, low-inclusion Type IIa diamond materials

• Contributions to advancing CVD diamond for industrial and R&D use cases

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Single Crystal Diamond Market – View in Detailed Research Report

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🌍 Outlook: The Future of Single Crystal Diamond Is Brighter and More Versatile

The single crystal diamond market is undergoing a significant transformation. While traditional abrasive applications continue to drive volume, the industry is investing heavily in next-generation electronic and optical applications, advanced manufacturing techniques, and scaling production to meet the demands of high-tech sectors.

📈 Key Trends Shaping the Market:

• Rapid advancement and cost reduction in CVD diamond growth technology

• Increasing demand for diamond in thermal management solutions for 5G, EVs, and high-power electronics

• Exploration of diamond for quantum information processing and sensing

• Geographic production expansion beyond the dominant China-based supply chain

Read Full Report:
Single Crystal Diamond Market – View in Detailed Research Report

The companies listed above are not only supplying a critical industrial material—they are pushing the frontiers of material science, enabling the technologies of tomorrow.