Last updated: August 6, 2026 | Reviewed by Mydharin Gemological Team
Lab-grown diamonds are 100% real diamonds. They share the exact same chemical composition (pure carbon), crystal structure, hardness (Mohs 10), and optical properties as mined diamonds. The US Federal Trade Commission officially classifies lab-grown diamonds as genuine diamonds, and they are certified by GIA and IGI using the same 4Cs grading system.
What Makes a Diamond "Real"?
A diamond is defined by its chemical structure: a carbon atom lattice in a cubic crystal system. Lab-grown diamonds meet this definition entirely. They are not simulants (like cubic zirconia or moissanite) — they are genuine diamonds created through HPHT or CVD technology.
Lab-Grown Diamond vs Diamond Simulants
| Property | Lab-Grown Diamond | Cubic Zirconia | Moissanite |
|---|---|---|---|
| Composition | Carbon (C) | Zirconium oxide | Silicon carbide |
| Hardness (Mohs) | 10 | 8–8.5 | 9.25 |
| Refractive Index | 2.42 | 2.15–2.18 | 2.65–2.69 |
| GIA/IGI Certified | Yes | No | No |
| Classified as Diamond | Yes (FTC) | No | No |
Are Lab-Grown Diamonds Worth Buying?
For most buyers, yes. Lab-grown diamonds deliver:
- 50–80% more carat weight for the same budget
- Certified quality — every Mydharin lab-grown diamond comes with an IGI certificate
- Conflict-free guarantee — no ethical concerns about sourcing
- Identical appearance — indistinguishable to the naked eye
Who Lab-Grown Diamonds Are Best For
- Engagement ring buyers wanting maximum size and quality within budget
- Ethically and environmentally conscious consumers
- Tennis bracelet or pavé jewellery buyers requiring multiple stones
- Fashion jewellery enthusiasts who rotate pieces frequently
Frequently Asked Questions
Are lab-grown diamonds considered real diamonds?
Yes. The FTC and all major gemological institutes (GIA, IGI) classify lab-grown diamonds as genuine diamonds. They are not imitations or simulants.
Are lab-grown diamonds worth buying?
Absolutely. You receive a certified, genuine diamond at 50–80% of the cost of a mined equivalent. For most buyers, this represents outstanding value.
Do lab-grown diamonds look different?
No. Lab-grown diamonds are visually identical to mined diamonds. Only specialist laboratory equipment using UV or spectroscopy can detect the difference.
Will lab-grown diamonds last as long?
Yes. With a Mohs hardness of 10, lab-grown diamonds are equally durable and scratch-resistant as mined diamonds — they will last a lifetime with normal care.
Sources
Shop certified lab-grown diamonds: Browse Mydharin Lab Diamond Jewellery
