Updated October 25, 2026 · By Enzo, founder of Laveran Paris
Key takeaways
- A lab-grown diamond ring costs from €880 at Laveran (0.30 carat) and €1,744 for a 1-carat solitaire, 18k gold or platinum setting included.
- It is a real diamond: pure carbon, with the same hardness and the same sparkle as a natural diamond. Only its origin differs, and it costs up to 80% less.
- Ask for an IGI or GIA certificate: at Laveran, every diamond has one and is non-fluorescent.
- Made to order in 2 to 3 weeks; some models are in stock. For Christmas, order before the end of November.
A lab-grown diamond ring costs from €880 at Laveran Paris, and €1,744 for an IGI- or GIA-certified 1-carat solitaire, in 18k gold or platinum. It is a real diamond, created in a laboratory, up to 80% less expensive than a natural diamond of the same quality. This guide gives you our real prices by carat and by model, the difference from a fake diamond, and how to choose a quality ring, for an engagement or any other occasion.
Contents
- How much does a lab-grown diamond ring cost?
- What is a lab-grown (synthetic) diamond?
- Lab-grown diamond, fake diamond or simulant: what's the difference?
- Which lab-grown diamond ring style should you choose?
- Gold or platinum: which metal should you choose?
- How do you choose a lab-grown diamond with the 4Cs?
- How can you check the quality of a lab-grown diamond?
- Why choose a lab-grown diamond ring?
- Where can you buy a lab-grown diamond ring?
- Frequently asked questions
How much does a lab-grown diamond ring cost?
At Laveran, a lab-grown diamond solitaire costs from €880 (0.30 carat, H/VS2) to €6,080 (3 carats, D/VVS1), setting included. The diamond's weight (carat) has the biggest effect on price, followed by its color and clarity. Here are the real prices of our Montaigne solitaire, as of October 2026:
| Center diamond | H / VS2 | F / VS1 | D / VVS1 |
|---|---|---|---|
| 0.30 ct | €880 | €976 | €1,080 |
| 0.50 ct | €1,136 | €1,344 | €1,544 |
| 0.70 ct | €1,400 | €1,568 | €1,720 |
| 1 ct | €1,744 | €2,096 | €2,360 |
| 1.50 ct | €2,520 | €3,160 | €3,440 |
| 2 ct | €2,960 | €3,632 | €4,304 |
| 3 ct | €4,440 | €5,200 | €6,080 |
Price of the Montaigne solitaire in 18k gold (yellow, white or rose) or 950 platinum, IGI- or GIA-certified lab-grown diamond included. Same price for every diamond shape.
Other settings are priced just above, for the same diamond:
| Model | Style | From |
|---|---|---|
| Montaigne | Solitaire | €880 |
| Vendôme | Solitaire on a pavé band | €1,280 |
| Odéon | Diamond halo | €1,480 |
| Odéon Double Halo | Double halo | €1,580 |
| Half-eternity bands | Diamond-set band | €536 |
Full details on the price of the stone alone, from 1 to 5 carats: how much does a lab-grown diamond cost?
Want to see the diamonds before you choose? In one of our 11 showrooms or by video call, an advisor shows you several certified lab-grown diamonds side by side, within your budget. Book an appointment →
What is a lab-grown (synthetic) diamond?
A lab-grown diamond, also called a synthetic diamond, is a real diamond made by people: it has the same atomic structure and the same physical, chemical and optical properties as a natural diamond. It is also known as a cultured or lab-created diamond, and sometimes, wrongly, as an artificial diamond. To the naked eye, it cannot be told apart from a mined diamond: only specialized laboratory equipment can make the difference.
It is made using two methods, which recreate the conditions in which diamonds form in the Earth's crust in a few weeks instead of millions of years:
- HPHT (high pressure, high temperature): a tiny diamond seed is placed in a press under very high temperature and extreme pressure. Carbon atoms build up over several weeks.
- CVD (chemical vapor deposition): the seed is placed in a low-pressure chamber, where carbon atoms settle and crystallize layer by layer. This process produces very pure diamonds.
To learn more: lab-grown vs. natural diamonds, everything you need to know.
Lab-grown diamond, fake diamond or simulant: what's the difference?
A lab-grown diamond ring is not a fake diamond ring. A lab-grown diamond is pure carbon, rated 10 on the Mohs scale like a natural diamond, and certified by the same laboratories. A simulant is a different material that looks like diamond:
- Cubic zirconia and glass: much softer, they scratch and lose their sparkle over time.
- Moissanite: a different stone (silicon carbide), very brilliant but with stronger rainbow flashes. Our comparison: moissanite or lab-grown diamond.
The surest way to avoid buying a simulant: an IGI or GIA certificate stating that the stone is a laboratory-grown diamond. Every check in detail: how to recognize a real lab-grown diamond.
Which lab-grown diamond ring style should you choose?
The solitaire remains the most popular choice for a lab-grown diamond engagement ring; a halo or a pavé band adds more sparkle for a few hundred euros more. Four styles cover most requests:
- The solitaire, a single diamond, timeless: Montaigne round or Montaigne oval, from €880.
- The solitaire on a pavé band, for continuous sparkle around the finger: Vendôme, from €1,280.
- The halo, a ring of small diamonds that makes the center stone look larger: Odéon, from €1,480.
- The double halo, for a bolder look: Odéon Double Halo, from €1,580.
The diamond's shape then changes the whole look. Oval and pear shapes lengthen the finger, the emerald cut has a more understated sparkle, cushion and princess cuts are more graphic. Our guides by shape: round · oval · pear · marquise · cushion · princess · emerald cut.
Lab-grown diamonds also come in color, blue, pink or yellow: see our colored diamond rings. To create a one-of-a-kind piece, our bespoke workshop designs the ring with you. The full collection: lab-grown diamond engagement rings.
Gold or platinum: which metal for a lab-grown diamond ring?
At Laveran, platinum costs the same as 18k gold: a 1-carat lab-grown diamond ring in platinum is €1,744, just like in gold. You choose on style, not budget:
- White gold and platinum show off a colorless diamond and give a modern look. Naturally white, platinum keeps its color without special care.
- Yellow gold gives a warm, classic style, very popular for solitaires.
- Rose gold, softer, pairs well with fair skin and vintage jewelry.
A tip: start from the jewelry she wears every day. If she mostly wears yellow gold, a white gold ring may end up on its own.
How do you choose a lab-grown diamond with the 4Cs?
Lab-grown diamonds are graded on the same 4Cs as natural diamonds: carat, color, clarity and cut. Our diamond guide covers them in detail; here is what matters for a ring:
- Carat (weight) has the biggest impact on price: at Laveran, going from 0.50 to 1 carat takes the solitaire from €1,136 to €1,744 in H/VS2 quality.
- Color runs from D (colorless) to Z (yellow tint). A 1-carat stone goes from €1,744 in H to €2,360 in D/VVS1. In H, the stone looks white once set.
- Clarity measures inclusions. From VS2 up, they are invisible to the naked eye.
- Cut determines sparkle: a well-cut diamond returns light better.
For a first purchase, H/VS2 offers the best balance of beauty and price. F/VS1 and D/VVS1 are for those who want a perfectly colorless, very pure stone.
How can you check the quality of a lab-grown diamond?
Ask for a certificate from a recognized gemological laboratory, the IGI (International Gemological Institute) or the GIA (Gemological Institute of America). At Laveran, every diamond comes with its IGI or GIA certificate and is non-fluorescent.
The certificate states the stone's laboratory origin, its shape, weight, color, clarity, polish, symmetry and proportions. Its number is often laser-inscribed on the diamond's girdle, so you can check that it really is the stone in your ring.
Why choose a lab-grown diamond ring?
Price first: for the same size and quality, a lab-grown diamond costs up to 80% less than a natural diamond. The same budget therefore buys a larger or finer stone.
- No mining: a lab-grown diamond is not linked to any extraction or conflict, and its origin is stated on the certificate.
- The same durability: rated 10 on the Mohs scale, it resists scratches and can be worn every day. Warm soapy water and a soft brush are all it needs: our care tips.
- Every shape and style, for engagement rings as well as diamond wedding bands.
Where can you buy a lab-grown diamond ring?
Buy from a jeweler who gives you an IGI or GIA certificate and lets you see the stones before you pay. Laveran Paris welcomes you by appointment in 11 showrooms: Paris · Lyon · Nice · Marseille · Aix-en-Provence · Bordeaux · Toulouse · Lille · Montpellier · Annecy · La Rochelle, or by video call.
Included with every ring:
- Free, insured delivery, handed over in person.
- Returns accepted within 30 days.
- Lifetime warranty, free resizing for life, free polishing and prong checks for life.
- Complimentary engraving and a free ring sizer to find the right size.
- Pay in installments with Alma.
Lead times: each ring is made to order in 2 to 3 weeks. Some models are in stock and others can be made express in a few days: finding an engagement ring urgently. For a Christmas proposal, order before the end of November.
Frequently asked questions
How much does a lab-grown diamond ring cost?
At Laveran, a lab-grown diamond ring starts at €880 (0.30 carat, H/VS2 quality). A 1-carat solitaire costs €1,744 in H/VS2 and €2,360 in D/VVS1, 18k gold or platinum setting included.
Is a lab-grown diamond ring a real diamond?
Yes. A lab-grown diamond is pure carbon, with the same hardness (10 on the Mohs scale) and the same sparkle as a natural diamond. Only its origin differs, and it is certified by the same laboratories, IGI or GIA.
What is the difference between a lab-grown diamond and a fake diamond?
A fake diamond is a different material, such as cubic zirconia or glass, that imitates the look of diamond but scratches and dulls. A lab-grown diamond is a real diamond, simply created in a laboratory.
Does a lab-grown diamond lose its sparkle over time?
No. Its properties are those of diamond: it does not turn yellow and does not scratch in everyday wear. At Laveran, polishing and prong checks are free for life to keep the ring as good as new.
Platinum or gold: which metal for a lab-grown diamond ring?
Choose on style, not price: at Laveran, platinum costs the same as 18k gold. White gold and platinum show off a colorless diamond, while yellow and rose gold give a warmer look.
How long does it take to receive a lab-grown diamond ring?
Allow 2 to 3 weeks for a made-to-order ring. Some models are in stock and others can be made express in a few days; the exact lead time is confirmed before you order.
Can I choose my ring remotely?
Yes. The appointment can take place by video call, and the ring is delivered free of charge, insured and handed over in person. You have 30 days to return it.
What if the ring size is wrong?
Resizing is free for life. To get it right from the start, ask for our free ring sizer.
Looking for your lab-grown diamond ring? Come and compare the stones in person. Book an appointment in one of our 11 showrooms or by video call: an advisor will show you the lab-grown diamonds available within your budget, with their IGI or GIA certificate.
