The Global Synthetic Loose Diamond Market was valued at USD 22.5 Billion in 2024 and is projected to reach USD 37.8 Billion by 2030, growing at a Compound Annual Growth Rate (CAGR) of 9.1% during the forecast period (2024–2030). This substantial growth is fueled by rising consumer demand for ethically sourced and sustainable luxury goods, significant technological advancements in diamond synthesis, and a notable reduction in production costs making lab-grown diamonds more accessible.

As the luxury and industrial sectors increasingly embrace synthetic diamonds for their purity, consistency, and ethical credentials, the key players driving innovation and market expansion are gaining prominence. In this blog, we profile the Top 10 Companies in the Synthetic Loose Diamond Industry—a dynamic mix of established technology giants, specialized manufacturers, and innovative startups shaping the future of gem production.

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🔟 1. Element Six (De Beers Group)

Headquarters: Luxembourg, Luxembourg
Key Offering: High-Pressure High-Temperature (HPHT) and Chemical Vapor Deposition (CVD) loose diamonds

Element Six, a part of the De Beers Group, is a world leader in synthetic diamond supermaterials and gem-quality stones. Operating its own Lightbox Jewelry brand, the company has significantly disrupted the market with its direct-to-consumer approach and focus on affordable fashion jewelry.

Innovation and Market Strategy:

• Pioneering both HPHT and CVD technologies for gem production

• Lightbox brand offers lab-grown diamonds at a fixed price per carat

• Extensive R&D in industrial and electronic applications for synthetic diamonds

Download FREE Sample Report: Global Synthetic Loose Diamond Market – View in Detailed Research Report

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9️⃣ 2. Diamond Foundry Inc.

Headquarters: Washington, D.C., USA
Key Offering: CVD-grown, carbon-neutral loose diamonds

Diamond Foundry has established itself as a premium producer of lab-grown diamonds, utilizing patented CVD technology. The company is renowned for producing large, high-quality stones and has garnered significant celebrity endorsements and investment, positioning itself at the forefront of sustainable luxury.

Innovation and Market Strategy:

• Vertically integrated supply chain from growth to cutting and polishing

• Claims 100% carbon-neutral production through renewable energy credits

• Strategic partnerships with renowned designers and retailers

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8️⃣ 3. IIa Technologies Pte. Ltd.

Headquarters: Singapore
Key Offering: Large, high-purity Type IIa CVD diamonds

IIa Technologies was a pioneer in scaling up CVD diamond production for gem applications, known for manufacturing some of the world’s largest lab-grown diamonds. The company’s focus on high-purity Type IIa diamonds, which are chemically identical to the purest mined diamonds, set a quality benchmark for the industry. (Note: The company underwent significant restructuring in recent years, but its technological contributions remain influential).

Innovation and Market Strategy:

• Specialized in producing large, colorless, and flawless diamonds

• Developed proprietary scalable CVD reactors

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7️⃣ 4. Washington Diamonds

Headquarters: Washington, D.C., USA
Key Offering: Custom-cut, precision-grown loose diamonds

Washington Diamonds focuses on the high-end market, producing custom-sized and shaped lab-grown diamonds primarily for the jewelry trade. The company emphasizes the “Made in USA” aspect and works closely with jewelers to create bespoke stones that meet specific design requirements.

Innovation and Market Strategy:

• Focus on precision cutting and customization for jewelry designers

• Strong B2B model serving the trade with consistent quality and supply

• Investment in advanced laser-cutting and grading technologies

Download FREE Sample Report: Global Synthetic Loose Diamond Market – View in Detailed Research Report

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6️⃣ 5. ALTR Created Diamonds

Headquarters: New York, USA
Key Offering: Branded, graded loose diamonds (CVD)

ALTR, a division of R.A. Riam Group, has built a strong reputation as a branded supplier of certified lab-grown diamonds. The company focuses on creating a distinct brand identity and ensures every stone is accompanied by reputable grading reports, providing confidence to retailers and consumers.

Innovation and Market Strategy:

• Strong branding and marketing efforts to build consumer trust

• Partnerships with major grading laboratories (IGI, GCAL)

• Focus on a consistent supply chain for jewelry retailers

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5️⃣ 6. Lusix

Headquarters: Mishmeret, Israel
Key Offering: Sun-grown diamonds using solar energy

Lusix is a prominent player known for its unique selling proposition of “sun-grown diamonds,” produced using 100% solar energy in Israel. This emphasis on sustainable energy use appeals strongly to environmentally conscious consumers and positions the brand as a leader in green manufacturing.

Innovation and Market Strategy:

• World’s first diamond grower powered entirely by solar energy

• Produces high-quality, large-carat diamonds for the luxury segment

• Strong focus on B2B partnerships with luxury brands

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4️⃣ 7. Adamas One Corp. (Acquired Scio Diamond)

Headquarters: Greenville, South Carolina, USA
Key Offering: CVD-grown loose diamonds for jewelry and technology

Adamas One Corp. is a publicly-traded company that acquired the assets of Scio Diamond. It focuses on producing high-quality, single-crystal lab-grown diamonds for both the gemstone and technology markets, leveraging proprietary CVD technology.

Innovation and Market Strategy:

• Dual-market strategy targeting both jewelry and industrial sectors

• Publicly listed, providing transparency and access to capital markets

• Focus on scaling production capacity in the United States

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3️⃣ 8. New Diamond Technology

Headquarters: St. Petersburg, Russia
Key Offering: Large, high-quality HPHT-grown diamonds

New Diamond Technology (NDT) is a Russian manufacturer with a strong reputation for producing large, gem-quality diamonds using the HPHT method. The company has been recognized for creating some of the world’s largest lab-grown diamonds and serves a global clientele.

Innovation and Market Strategy:

• Expertise in growing large-carat, high-color diamonds via HPHT

• Strong presence in international markets despite geopolitical factors

• Continuous R&D to improve the size and quality of HPHT crystals

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2️⃣ 9. Green Rocks

Headquarters: Moscow, Russia
Key Offering: HPHT-grown loose diamonds in various colors

Green Rocks is another major Russian producer specializing in HPHT synthetic diamonds. The company has a significant production volume and is known for its ability to produce fancy colored lab-grown diamonds, catering to a niche but growing segment of the market.

Innovation and Market Strategy:

• Large-scale HPHT production capabilities

• Specialization in fancy colored diamonds (yellow, blue, pink)

• Established distribution network across multiple regions

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1️⃣ 10. Sumitomo Electric Industries, Ltd.

Headquarters: Osaka, Japan
Key Offering: High-purity synthetic diamonds for industrial and gem use

Sumitomo Electric, a global industrial conglomerate, is a significant player in the synthetic diamond market, primarily for industrial applications but with a growing presence in the gem sector. The company’s vast experience in material science and technological infrastructure gives it a formidable advantage.

Innovation and Market Strategy:

• Decades of experience in industrial diamond production

• Leveraging industrial expertise to enter the gem-quality diamond market

• Strong R&D focus on new applications and production efficiencies

Get Full Report Here: Global Synthetic Loose Diamond Market – View in Detailed Research Report

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💎 Outlook: The Future of Synthetic Diamonds is Brighter and More Accessible

The synthetic loose diamond market is experiencing a paradigm shift, moving from a niche alternative to a mainstream choice for consumers and industries alike. While traditional diamond mining continues, the lab-grown sector is capturing an increasing market share through technological innovation, ethical transparency, and competitive pricing.

📈 Key Trends Shaping the Market:

• Rapid technological advancements reducing production costs and improving quality

• Growing consumer preference for ethically sourced and environmentally sustainable gems

• Expansion into new applications beyond jewelry, including semiconductors and optics

• Increased investment in marketing and branding to build consumer awareness and trust

Get Full Report Here: Global Synthetic Loose Diamond Market – View in Detailed Research Report

The companies profiled above are not only producing exquisite gemstones—they are fundamentally reshaping the luxury and technology landscapes with innovation and responsibility.