Updated October 23, 2026 · By Enzo, founder of Laveran Paris
Key takeaways
- At Laveran, a 1-carat lab-grown diamond ring costs €1,744 in H/VS2 quality and €2,360 in D/VVS1, 18k gold setting included.
- Prices range from €880 for 0.30 carat to €7,456 for 5 carats, with the same price in white, yellow or rose gold or platinum.
- A lab-grown diamond costs up to 80% less than a natural diamond of the same quality, with the same composition and the same sparkle.
How much does a lab-grown diamond cost? At Laveran Paris, a solitaire ring with a 1-carat lab-grown diamond costs €1,744, and €2,960 with 2 carats. These prices cover the entire ring: the IGI- or GIA-certified diamond, with no fluorescence, and its 18k gold setting. This guide gives all our real prices, from 0.30 to 5 carats in three qualities, then explains what drives the price of a lab-grown diamond and what it is worth on resale.
Contents
- How much does a lab-grown diamond cost in 2026?
- What is the price of a 1-carat lab-grown diamond?
- How much do 2, 3 or 5 carats cost?
- What makes the price of a diamond vary?
- Why is it cheaper than a natural diamond?
- How much do other lab-grown diamond jewelry pieces cost?
- What does the price include at Laveran?
- Does a lab-grown diamond have resale value?
- Frequently asked questions
How much does a lab-grown diamond cost in 2026?
A lab-grown diamond ring costs from €880 (0.30 carat) to €7,456 (5 carats) at Laveran. Here are the real prices of our Montaigne solitaire, our best-selling model, taken from our product pages in October 2026. The price is the same for every diamond shape: round, oval, pear, cushion, princess, marquise or emerald cut.
| Diamond weight | H/VS2 quality | F/VS1 quality | D/VVS1 quality |
|---|---|---|---|
| 0.30 carat | €880 | €976 | €1,080 |
| 0.50 carat | €1,136 | €1,344 | €1,544 |
| 0.70 carat | €1,400 | €1,568 | €1,720 |
| 1 carat | €1,744 | €2,096 | €2,360 |
| 1.30 carats | €2,016 | €2,464 | €2,656 |
| 1.50 carats | €2,520 | €3,160 | €3,440 |
| 2 carats | €2,960 | €3,632 | €4,304 |
| 2.50 carats | €3,760 | €4,960 | €5,392 |
| 3 carats | €4,440 | €5,200 | €6,080 |
| 4 carats | €5,096 | €5,856 | €6,736 |
| 5 carats | €5,816 | €6,576 | €7,456 |
Price of the complete ring: Montaigne solitaire in 18k gold (white, yellow or rose) or 950 platinum, IGI- or GIA-certified lab-grown diamond with no fluorescence. Prices as of October 23, 2026.
At Laveran, platinum costs the same as 18k gold: you choose the metal for its color, not for your budget. Our guides by shape: round · oval · pear · marquise · cushion · princess · emerald cut.
What is the price of a 1-carat lab-grown diamond?
A solitaire with a 1-carat lab-grown diamond costs €1,744 in H/VS2 quality, €2,096 in F/VS1 and €2,360 in D/VVS1 at Laveran. One carat is the most requested weight for an engagement ring: it weighs 0.2 gram and measures about 6.5 mm across in a round cut.
Which quality should you choose? H/VS2 looks white and clean to the naked eye once set. F/VS1 and D/VVS1 are for those who want a purer white stone, most visible on larger stones and in white gold or platinum. The difference between H/VS2 and D/VVS1 on 1 carat is €616.
Real size on the finger and comparison with natural diamonds: everything is in our article 1-carat lab-grown diamond: size and price.
How much do 2, 3 or 5 carats cost?
A 2-carat lab-grown diamond ring starts at €2,960, 3 carats at €4,440 and 5 carats at €5,816 at Laveran. This is where lab-grown diamonds really change the game: weights reserved for very large budgets in natural diamonds become accessible.
- 2 carats: from €2,960 (H/VS2) to €4,304 (D/VVS1).
- 3 carats: from €4,440 to €6,080.
- 5 carats: from €5,816 to €7,456.
On a large stone, cut and quality show more. We recommend comparing several diamonds under a loupe before choosing, in a showroom or by video call.
Compare prices with the stone in hand. In one of our 11 showrooms or by video call, an expert shows you several certified lab-grown diamonds in different carats and qualities to find the best balance for your budget. Book an appointment →
Montaigne round solitairefrom €880
Montaigne oval solitairefrom €880
Odéon round ring (halo)from €1,480
What makes the price of a diamond vary?
The price of a lab-grown diamond depends on the same four criteria as a natural diamond: the 4Cs. A lab-grown diamond is graded by the same laboratories, on the same scales.
- Weight (carat): the criterion that matters most. One carat equals 0.2 gram. At Laveran, going from 1 to 2 carats in H/VS2 takes the ring from €1,744 to €2,960.
- Color: graded from D (perfect white) to Z (yellow tint). From D to F, the diamond is pure white; from G to I, the difference is very hard to see with the naked eye.
- Clarity: from FL (no inclusions) to I3 (visible inclusions). In VS2, inclusions can only be seen under a loupe; in VVS1, they are very hard to find even under a loupe.
- Cut: cut quality determines sparkle. An Excellent or Very Good cut returns the most light.
Add to this fluorescence: all Laveran diamonds have no fluorescence, which avoids the milky look some stones can take on in daylight. The IGI or GIA certificate states each of these criteria: it is what lets you compare two prices at equal quality. How to read it: IGI and GIA certification explained.
Why is a lab-grown diamond cheaper than a natural diamond?
A lab-grown diamond costs up to 80% less than a natural diamond because it is made in a few weeks, without mining. It is not an imitation: a lab-grown diamond is pure carbon, with the same crystal structure, the same hardness (10 on the Mohs scale) and the same sparkle as a natural diamond. Only its origin differs, and it is stated on the certificate.
Two processes exist:
- HPHT (high pressure, high temperature), which recreates the conditions in which diamonds form in the earth;
- CVD (chemical vapor deposition), which grows the diamond layer by layer.
At equal quality, both processes produce diamonds comparable in price and beauty; the certificate matters, not the method. The detailed comparison: lab-grown or natural diamond.
How much do other lab-grown diamond jewelry pieces cost?
Lab-grown diamond jewelry starts at €536 at Laveran, with a half-eternity band. Here are the starting prices of our main models, as of October 2026:
| Piece | Diamond(s) | Starting price |
|---|---|---|
| Saint-Louis half-eternity band | 0.30 carat total | €536 |
| Montaigne earrings (studs) | 0.50 carat total | €632 |
| Vendôme eternity band (full circle) | 0.50 carat total | €864 |
| Montaigne pendant | 0.30 carat | €880 |
| Montaigne solitaire | 0.30 carat | €880 |
| Vendôme ring (pavé band) | 0.30 carat center | €1,280 |
| Odéon ring (halo) | 0.30 carat center | €1,480 |
The Montaigne studs go to €960 with 1 carat total (0.50 carat per ear). The full collection: lab-grown diamond engagement rings and lab-grown diamond fine jewelry. On a tight budget: engagement ring under €1,000.
What does the price include at Laveran?
The displayed price includes the ring, the certified diamond and every service, at no extra cost.
- IGI or GIA certificate delivered with the piece.
- Free engraving.
- Free, insured delivery, handed over in person.
- Returns accepted within 30 days.
- Lifetime warranty.
- Free lifetime resizing, polishing and prong checks.
- Free ring sizer to find the finger size.
- Pay in installments with Alma.
Each piece is made to order in 2 to 3 weeks; some models are available in stock, and others can be made with express production in a few days. For Christmas, we recommend ordering before the end of November.
Does a lab-grown diamond have resale value?
A lab-grown diamond keeps its sparkle and hardness forever, but its resale value is low. There is no official price index for lab-grown diamonds, and the secondhand market takes them back reluctantly. We therefore recommend buying one to wear, not as an investment.
That is also its appeal: for the same budget, you give a bigger or finer stone. To see where your budget stands: what is the average price of an engagement ring?
Frequently asked questions
How much does a 1-carat lab-grown diamond cost?
At Laveran, a solitaire ring with a 1-carat lab-grown diamond costs €1,744 in H/VS2 quality, €2,096 in F/VS1 and €2,360 in D/VVS1, 18k gold or platinum setting included.
What lab-grown diamond can you get for €1,000?
For under €1,000, you can get a 0.30-carat Montaigne solitaire (€880 in H/VS2, €976 in F/VS1), a full-circle Vendôme eternity band (€864) or studs with 1 carat total (€960).
How much does a 2-carat lab-grown diamond cost?
A Montaigne ring with a 2-carat lab-grown diamond costs €2,960 in H/VS2, €3,632 in F/VS1 and €4,304 in D/VVS1.
How much does a 1-carat diamond weigh?
One carat equals 0.2 gram. The price of a diamond is therefore not calculated per gram but per carat, and according to the 4Cs: weight, color, clarity and cut.
Does platinum cost more than gold?
Not at Laveran: 950 platinum is the same price as 18k white, yellow or rose gold.
Is a lab-grown diamond a real diamond?
Yes. It is pure carbon, with the same hardness and sparkle as a natural diamond. It is certified by the same laboratories (IGI, GIA), which state its origin.
Is there an official price index for lab-grown diamonds?
No. Unlike natural diamonds, there is no official price index for lab-grown diamonds. To compare two prices, always compare certified stones of the same weight and quality.
Can I pay in installments?
Yes, installment payments are offered with Alma at checkout.
Have a budget in mind? We will show you what it gets you, stone in hand. Book an appointment in one of our 11 showrooms or by video call: we present the diamonds available within your budget, with their IGI or GIA certificate.
