Lab-grown and natural diamonds are both real diamonds: they share the same chemistry, hardness and sparkle, and they look identical to the naked eye. What separates them is origin, rarity, price and how they hold value over time, so the right choice depends on what matters most to you.
We work with both, which is exactly why we want to explain the difference without spin. Neither option is "better" in every way. Each one answers a different set of priorities, and understanding them makes the decision much easier.
What lab-grown and natural diamonds have in common
A diamond is pure carbon arranged in a tightly bonded crystal. Whether that crystal formed deep underground or in a laboratory, the result shares the same essential properties.
- Same material. Both are crystallized carbon, not a simulant. Cubic zirconia and moissanite are different materials that only imitate diamond.
- Same hardness. Both rate 10 on the Mohs scale, so both are suited to rings worn every day.
- Same optical behavior. Both bend and reflect light the same way. A well-cut lab-grown diamond and a well-cut natural diamond show the same brilliance and fire.
- Same grading language. Both are described by cut, color, clarity and carat weight.
Telling them apart requires specialized gemological instruments. A trained eye with a loupe is not enough.
Where they differ
Origin and time
Natural diamonds formed under intense heat and pressure in the Earth's mantle, most of them more than a billion years ago, and reached the surface through volcanic activity. Lab-grown diamonds are created in weeks using one of two methods: high pressure, high temperature (HPHT), which recreates the conditions of the mantle, or chemical vapor deposition (CVD), which builds the crystal layer by layer from a carbon-rich gas.
Rarity
Natural diamonds are a finite resource, and every one carries a geological history that cannot be repeated. Lab-grown diamonds can be produced to order. For some people, that rarity is the whole point; for others, it matters less than size or design.
Price
For a similar size and quality, a lab-grown diamond typically costs significantly less than a natural one. That difference lets many buyers choose a larger stone, a more elaborate design or a piece with many diamonds within the same budget.
Long-term value
Natural diamonds have a long-established secondary market. Lab-grown diamond prices have fallen as production has grown, and their resale market is still small. We recommend buying any diamond because you love it and plan to wear it, not as a financial investment.
Side by side
| Natural diamond | Lab-grown diamond | |
|---|---|---|
| Material | Crystallized carbon | Crystallized carbon |
| Hardness (Mohs) | 10 | 10 |
| Appearance | Identical to the naked eye | Identical to the naked eye |
| Origin | Formed in the Earth over geological time | Grown in a laboratory in weeks (HPHT or CVD) |
| Rarity | Finite | Produced to order |
| Price for similar size and quality | Higher | Lower |
| Resale market | Established | Still developing |
The same design, two choices
The clearest way to see the difference is to compare one design made both ways. Our riviera necklace exists in two versions with the same 40 cm length and the same 4.85 total carats set in 18k white gold: the Lorens Riviera Diamond Necklace with natural diamonds, and the Lorens Necklace with Lab-Grown Diamonds. Open both pages and compare them: the design is the same, and the price reflects the origin of the stones.
Other pieces are designed around one option. The Bourbon earrings and the Mavie wedding band use lab-grown diamonds, while the Carlota ring is set with natural diamonds. You can browse more in our diamond rings collection.
How to know what you are buying
Transparency is the most important part of any diamond purchase. Under guidance from the U.S. Federal Trade Commission, a diamond made in a laboratory must be clearly described as such, with terms like "lab-grown" or "laboratory-created." A few habits protect you:
- Read the full description, not just the title. Look for the words "lab-grown," "laboratory-created" or "natural" next to the stone.
- Ask what documentation comes with the stone, and what it states about origin.
- Be cautious with vague terms such as "real," "genuine" or "eco" used without explaining the origin of the diamond.
- Ask about mixed pieces. Some designs combine a center stone of one origin with accent stones of another. A clear seller will tell you which is which.
Which one should you choose?
Start with what you want the piece to mean. These questions usually point the way.
Choose natural diamonds if...
- the rarity and geological story of the stone are part of what you value;
- the piece is meant to become an heirloom passed through generations;
- you want the long-established market behind natural diamonds.
Choose lab-grown diamonds if...
- you want a larger stone or a design with many diamonds within your budget;
- you care most about how the piece looks and feels day to day;
- you are comfortable with a resale market that is still taking shape.
A note on environmental claims
You will see environmental arguments on both sides. The real impact depends on the specific mine, the specific producer and the energy that powers it, so general labels tell you little. If sustainability guides your choice, ask the seller for specifics.
Both can mark your story
Keep reading: planning to wear your diamond every day? Read can you wear 18k gold every day? for practical habits that keep the setting and the stones looking their best.
A diamond's job is to hold a memory: a proposal, a birth, a promise kept. Natural or lab-grown, the stone you choose should fit your values, your budget and the way you live. Compare both versions of our riviera necklace, or explore our necklaces and rings to see which feels right for your moment.