Industry Reports

Lab-Grown Diamond Market Report 2026

The lab-grown diamond market reached $27.8-29.7 billion in 2025, growing at 11-13.4% CAGR. Analyzes CVD vs HPHT technology, price trends, and consumer adoption.

Published July 21, 2026

Key Findings

- LGD market: $27.8-29.7B (2025), 11-13.4% CAGR - CVD holds ~61% of global production; HPHT ~55% of gem-quality - LGD prices dropped 60-80% in 5 years - 50%+ of US engagement rings use lab-grown center stones - India ~45% of global LGD production by volume; China ~20%

Executive Summary

The lab-grown diamond market has transformed from niche to mainstream. Valued at $27.8-29.7 billion in 2025, projected to grow at 11-13.4% CAGR through 2031.

Market Size

Year	Market Size
2023	$24.1B
2024	$26.0B
2025	$27.8-29.7B
2026 (E)	$30.2-33.5B
2031 (E)	$50-55B

CVD vs HPHT

CVD (Chemical Vapor Deposition): Methane ionized in vacuum; carbon deposits layer-by-layer at ~800-1000°C. Market share ~61%. Superior scalability, larger crystals. Slower growth rate (0.5-1.0 mm/day).

HPHT (High Pressure High Temperature): Carbon dissolved in molten metal at 1,300-1,600°C, 5-6 GPa. Market share ~55% (gem-quality). Faster growth (2-3 days/ct). Better for colored diamonds.

Price Trends

Category	2020	2025	Change
1ct LGD (G-H, VS)	$2,500-4,000	$500-1,500	-70-80%
1ct Natural (G-H, VS)	$5,500-6,500	$4,000-6,000	-15-25%

Regional Production

Country	Share	Tech	Key Players
India	~45%	CVD	Surat cluster, 700K+ workers
China	~20%	HPHT+CVD	Henan province
USA	~15%	CVD	Diamond Foundry, WD
Russia	~8%	HPHT	New Diamond Tech

Conclusion

LGD approaching inflection point. Winning strategy: offer both natural and lab-grown with clear positioning differentiation.