Popular Guide · 6 min
Lab-Grown vs
Natural Diamonds
This is the most asked question we receive. Both are real diamonds — the difference is where they were born. We are going to give you a completely honest, objective answer so you can decide what matters most to you.
Are lab diamonds real diamonds?
Yes — completely. A lab-grown diamond has identical chemical composition, crystal structure, hardness, and optical properties as a mined diamond. Both are 100% carbon in cubic crystal form. A trained gemologist cannot tell them apart with the naked eye, and even most instruments cannot differentiate without specialist equipment.
GIA and IGI grade lab diamonds using the exact same 4Cs scale as natural diamonds. Your lab diamond will come with a full certificate just like a natural stone.
How are lab diamonds made?
HPHT
High Pressure High Temperature
Mimics the conditions deep within the earth — extreme pressure (1.5 million psi) and heat (~1,500°C). A carbon seed crystal grows into a full diamond over weeks. Tends to produce Type IIa diamonds (extremely pure).
CVD
Chemical Vapour Deposition
A carbon-rich gas is ionised into plasma in a vacuum chamber. Carbon atoms precipitate and crystallise onto a diamond seed plate, building up layer by layer. Produces very pure Type IIa diamonds. Preferred by most modern labs.
Side-by-Side Comparison
| Aspect | Lab-Grown | Natural |
|---|---|---|
| Chemical composition | Identical (pure carbon crystal) | Identical (pure carbon crystal) |
| Hardness | 10 (Mohs scale) | 10 (Mohs scale) |
| Optical properties | Same brilliance, fire, scintillation | Same brilliance, fire, scintillation |
| GIA/IGI certified | Yes — same grading process | Yes |
| Price (1ct G/VS1) | ~₹45,000–₹80,000 | ~₹2,50,000–₹4,00,000 |
| Price trend | Falling year-on-year | Historically appreciates |
| Resale value | Very low (5–20% of purchase price) | Moderate (30–60% of purchase price) |
| Environmental impact | Lower (no mining), but energy-intensive | Land disruption; improving via ethical mining |
| Rarity | Not rare — can be produced at scale | Finite resource formed over billions of years |
| Sentimental value | Personal — many find no difference | Appeals to those who value geological origin |
Which should you choose?
Choose Lab-Grown if...
- Maximum size for your budget
- Not concerned about resale value
- Want a colourless stone affordably (D/E colour)
- Environmental footprint matters to you
- You prefer to spend more on the setting
Choose Natural if...
- The geological origin and rarity matter to you
- You want better long-term resale value
- Heirloom quality is a priority
- You value the billions-of-years story
- You're buying investment-grade stones (3ct+)
Our honest view: Both are beautiful choices and neither is “better” — they serve different priorities. If you want the most diamond for your budget, lab-grown is remarkable value. If the geological uniqueness and long-term value retention matter to you, choose natural. We carry both at Smilvin, and we will never push you either way.
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