Stella Fine Jewellery May 06, 2026

What Is the Difference Between Lab-Grown and Natural Diamonds?

The main difference between lab-grown and natural diamonds is where they come from. Everything else — appearance, hardness, brilliance — is essentially the same. Here is what actually changes between the two, and what it means for buyers.

Key Takeaways
  • The main difference between lab-grown and natural diamonds is origin, not appearance or quality.
  • Lab-grown diamonds are more accessible in price for the same size and quality.
  • Natural diamonds generally carry stronger resale perception because of geological rarity.
  • Both lab-grown and natural diamonds are real diamonds with the same hardness and brilliance.
  • The right choice depends on whether you value budget flexibility or rarity and resale more.

Difference in Origin

Natural diamonds are formed between 150 and 200 kilometres below the earth's surface under extreme heat and pressure. This process takes hundreds of millions of years, and volcanic activity eventually brings the diamond-bearing rock closer to the surface where it can be mined.

Lab-grown diamonds are created in controlled laboratory environments using either CVD (Chemical Vapour Deposition) or HPHT (High Pressure High Temperature) technology. Both methods produce a crystal of pure carbon — which is, by definition, a diamond. The process takes several weeks rather than millions of years.

Difference in Price

Because natural diamonds are geologically rare and involve complex, large-scale mining operations, they carry a significant scarcity premium in their pricing. Lab-grown diamonds, with a more controlled and predictable supply chain, are considerably more accessible in price for the same size and quality.

This price difference is one of the most significant practical reasons Indian buyers are choosing lab-grown diamonds — it opens up the possibility of owning a certified, fine quality diamond piece at a price point that makes genuine sense. For more on pricing, read our complete lab-grown diamond vs natural diamond guide.

Difference in Resale Value

Natural diamonds generally hold their resale value better than lab-grown diamonds. The geological rarity of natural diamonds supports a more established secondary market.

Lab-grown diamonds should not be purchased as an investment or a financial asset. They are jewellery — bought to be worn, given, and enjoyed. If resale potential is a priority for you, natural diamonds are the more appropriate choice.

Difference in Sustainability

Diamond mining involves significant land disruption, water use, and environmental impact. Lab-grown diamonds avoid the mining process, which is meaningful for buyers who consider environmental responsibility in their purchasing decisions. However, lab-grown diamond production does require energy — so it is not accurate to describe them as completely impact-free.

Which One Should You Choose?

If you are buying jewellery to wear, celebrate a milestone, or gift to someone you love — and getting the best diamond quality within your budget matters — lab-grown diamonds are an excellent and completely legitimate choice. They are certified, identical in appearance, and significantly more accessible in price.

If geological rarity, cultural tradition, or stronger resale value matter more to you than size or design flexibility, natural diamonds are the right fit.

Both are real diamonds. Both are beautiful. The right choice is the one that aligns with what you actually value. Browse our collection of certified lab-grown diamond rings or explore our custom lab-grown diamond jewellery options.

Frequently Asked Questions

Origin. Natural diamonds form in the earth over hundreds of millions of years; lab-grown diamonds are created in a laboratory over several weeks using technology that replicates the same conditions. In terms of chemical composition, hardness, and appearance, both are the same.

No — they look identical. Even experienced jewellers cannot tell them apart visually. Only specialised gemological testing equipment can identify whether a diamond is lab-grown or naturally mined.

For everyday fine jewellery, engagement rings, and gifting, lab-grown diamonds are an excellent choice — they offer the same beauty and certification with better price accessibility. For buyers who prioritise geological rarity or long-term resale value, natural diamonds are better suited.