Buying lab-grown diamonds: The complete buyer's guide

Lab-grown Diamonds: Everything You Need to Know in 2026

Buying lab-grown diamonds in 2026 is no longer a niche decision, but mainstream. They are chemically identical to natural diamonds, have the same optical appearance – and cost 70-80% less. We provide the complete buying guide.

What are Lab-grown Diamonds?

Real diamonds – identical carbon structure, identical hardness (Mohs 10), identical sparkle – but created in a laboratory. Two methods:

• HPHT (High Pressure High Temperature): Simulates natural formation – pressure and heat
• CVD (Chemical Vapor Deposition): Carbon deposition on a substrate

Lab-grown vs. Natural: The Real Differences

• Chemistry: Identical
• Optics: Identical to the naked eye
• Hardness: Identical
• Certificate: Lab-grown diamonds are certified by GIA and IGI
• Resale: Lab-grown diamonds do not have a stable second-hand market (yet)
• Price: 70-80% cheaper – allows for more carats for the same budget

For Whom Lab-grown is the Better Choice

• Couples with a limited budget who want maximum size
• Buyers with ethical concerns about diamond mining
• People for whom resale value is not important

Certificate is Mandatory

Only buy lab-grown diamonds with a GIA or IGI certificate – the certificate confirms the laboratory origin and all 4Cs. No reputable dealer sells without a certificate.

Buy lab-grown diamonds at corelunejewellery.de – IGI certified, in 585 and 750 gold, honestly labeled.