Diamond Investment 2.0: Do lab-grown diamonds retain their value?

The diamond market is undergoing a transformation. While natural diamonds have traditionally been considered a classic investment, lab-grown diamonds are rapidly gaining in importance. But are they also a financially worthwhile investment? We analyze the market forecast for 2026.

1. Real diamonds, different market values

Chemically and physically, lab-grown diamonds are identical to natural diamonds. They are evaluated according to the classic 4Cs (carat, cut, clarity, color) and certified by institutes such as GIA or IGI . However, their market origin plays a crucial role in their value development.

2. The price advantage and its effects

Lab-grown diamonds currently cost 40–70% less than natural diamonds. This allows buyers to purchase significantly larger carat sizes for the same budget. For investors, this means:

• Lower entry costs: High-quality jewelry becomes more accessible.
• Market dynamics: While natural diamonds remain stable due to limited resources, LGD prices depend more on technological advances in production.

3. Value development: Nature vs. Laboratory

For collectors and buyers seeking genuine value retention, quality is crucial. We recommend the following criteria for stable value:

• Sizes between 0.50 and 1.50 carats .
• Excellent cut: Brilliance is the most important price driver.
• Certification: Only stones with a GIA or IGI report retain their marketability.

4. Forecasts for 2026 and beyond

Current market analyses show a clear trend: Demand for colored lab-grown diamonds (pink, yellow, blue) is growing rapidly and could develop its own collector value in the future. In the EU, the market share of lab-grown diamonds is expected to rise to over 30%.

5. Decision-making aid: What suits your goals?

Conclusion

Lab-grown diamonds offer incredible brilliance and durability at attractive prices. While less suitable as purely speculative investments than rare natural diamonds, with the right quality and certification from Sirius Diamond , they represent a solid and modern tangible asset.