Key takeaways
- A lab-grown ruby (or synthetic ruby) is real corundum: same composition, same crystal structure and same hardness (9 out of 10) as a natural ruby.
- Only the origin changes: it is created in a lab instead of being mined, which makes it far more affordable.
- At Laveran, a ruby engagement ring costs from €800 (0.30-carat stone) and €1,424 with a 1-carat ruby.
A lab-grown ruby is a real ruby, made by people: at Laveran, a lab-grown ruby engagement ring costs from €800, and €1,424 with a 1-carat center stone. Chemically, it is the same stone as a natural ruby: aluminum oxide colored red by chromium. This guide answers the real questions: how it differs from a natural ruby, how to tell them apart, what it costs, which setting to choose for a ruby ring, and what this red stone symbolizes.
Contents
- What is a lab-grown ruby?
- What is the difference between a synthetic ruby and a natural ruby?
- How can you tell a lab-grown ruby?
- How much does a lab-grown ruby cost?
- Which ruby engagement ring should you choose?
- Ruby ring in yellow gold, white gold or platinum?
- What does a ruby engagement ring mean?
- Can you wear a ruby every day?
- FAQ
What is a lab-grown ruby?
A lab-grown ruby is red corundum crystallized in a laboratory, not an imitation. Every ruby, natural or not, belongs to the corundum family: aluminum oxide whose red color comes from traces of chromium. In the lab, these same elements are brought together and the heat conditions that allow the crystal to form are recreated. The result has the same chemical composition, the same crystal structure and the same hardness as a mined stone.
The terms lab-grown ruby, synthetic ruby, lab-created ruby and man-made ruby all mean the same thing. Ruby was in fact one of the very first gemstones reproduced by people: the flame-fusion process developed by French chemist Auguste Verneuil in the early 20th century is still used today (source).
Do not confuse it with an imitation: red glass or another red stone sold as “ruby-style” has neither the composition nor the hardness of a ruby. A synthetic ruby, on the other hand, really is a ruby.
What is the difference between a synthetic ruby and a natural ruby?
The only real difference is the origin, and therefore the price. To the naked eye, a lab-grown ruby and a natural ruby of the same color are impossible to tell apart. Here is what changes, and what does not:
| Criterion | Lab-grown ruby | Natural ruby |
|---|---|---|
| Mineral | Corundum (aluminum oxide + chromium) | Corundum (aluminum oxide + chromium) |
| Hardness (Mohs scale) | 9 out of 10 | 9 out of 10 |
| Origin | Crystallized in a lab | Formed in the earth and mined (Myanmar, Mozambique, Thailand, Sri Lanka…) |
| Color | Even red, chosen when the stone is created | From pink to deep red; the rarest are called “pigeon blood” |
| Treatments | Color obtained as the crystal grows | Often heated to improve color or clarity |
| Price | Affordable: a complete ring from €800 at Laveran | Varies widely with origin, color, clarity and the absence of treatment |
The price of a natural ruby depends mostly on its color and its history: an unheated vivid red ruby from a renowned origin is in a different league from a treated light pink ruby. For everything about shades, varieties (pigeon blood, star ruby, pink ruby) and the value of a natural ruby, read our guide ruby: color, price and properties of the stone.
The logic is the same as for diamonds: for the same look, the lab-grown stone costs a fraction of the mined stone. That is exactly what makes a 1- or 2-carat ruby ring possible on a classic engagement ring budget.
How can you tell a lab-grown ruby?
With the naked eye, you can’t: only an equipped gemologist can distinguish a synthetic ruby from a natural ruby. Under the microscope, they examine the inclusions and growth marks of the crystal, which differ depending on whether the stone formed in the earth or in a lab. The famous “silk” of natural rubies, for example, consists of natural growth inclusions.
What to keep in mind when buying:
- A reputable seller always discloses the origin of the stone. At Laveran, every product page clearly states “synthetic ruby.”
- A “real ruby” is not necessarily natural: a lab-grown ruby is a real ruby. A fake ruby is an imitation (glass, a stone from another family).
- A very low price for a large “natural ruby” should make you wary: ask for a report from a gemological laboratory.
Want to see a lab-grown ruby on the finger? In our 11 showrooms or by video call, an expert shows you settings and stone sizes side by side. Ruby engagement rings from €800. Book an appointment →
How much does a lab-grown ruby cost?
At Laveran, a lab-grown ruby engagement ring costs from €800 (0.30 carat) to €4,260 (5 carats), depending on the setting and the weight of the stone. A 1-carat synthetic ruby set as a solitaire costs €1,424. Here are the actual prices of our four families of ruby rings, as of October 2026:
| Ruby weight | Solitaire (Palais Royal, Montaigne) | Pavé band (Vendôme) | Halo (Odéon) | Double halo (Odéon) |
|---|---|---|---|---|
| 0.30 carat | €800 | €1,200 | €1,400 | €1,500 |
| 0.50 carat | €1,056 | €1,456 | €1,656 | €1,756 |
| 0.70 carat | €1,160 | €1,560 | €1,760 | €1,860 |
| 1 carat | €1,424 | €1,824 | €2,024 | €2,124 |
| 1.50 carats | €1,960 | €2,360 | €2,560 | €2,660 |
| 2 carats | €2,280 | €2,680 | €2,880 | €2,980 |
| 3 carats | €2,760 | €3,160 | €3,360 | €3,460 |
| 5 carats | €3,560 | €3,960 | €4,160 | €4,260 |
These prices cover the whole ring: the ruby, the 18k gold or platinum setting, and the lab-grown diamonds of the pavé or halo. They are the same in white gold, yellow gold, rose gold and platinum 950: at Laveran, platinum costs the same as gold. Installment payments are available with Alma.
Why does a 1-carat ruby remain so affordable? Because the per-carat price of a natural ruby climbs very quickly with size and color quality, whereas in a lab, a beautiful red is not a rarity. The gap with a natural ruby therefore grows with the size of the stone.
Which ruby engagement ring should you choose?
A solitaire showcases the ruby’s color; a diamond halo makes it brighter. Both are safe choices; it all depends on the look you want.
- The six-prong solitaire, simple and timeless, with a slim plain band: nothing distracts from the red. Palais Royal ruby ring, from €800.
- The pavé band, for a ruby and diamond ring that sparkles across the top of the band: Vendôme round ruby ring, from €1,200.
- The halo, a circle of lab-grown diamonds around the ruby that makes it look larger and more intense: Odéon oval ruby ring, from €1,400.
- The double halo, two rows of diamonds for a very bright ring: Odéon double halo ruby, from €1,500.
Round, oval, cushion or emerald-cut ruby?
Oval is the most requested shape for a ruby ring: it elongates the finger and looks larger for the same weight. Round is the most classic, cushion softer and more vintage, emerald cut more graphic and architectural. At Laveran, lab-grown rubies come in round, oval, cushion and emerald cut, from 0.30 to 5 carats.
All our ruby, sapphire and emerald rings are gathered in the precious stones collection. Torn between a ruby and a rarer colored stone? Our article on the colored diamond engagement ring compares the options.
Ruby ring in yellow gold, white gold or platinum?
Yellow gold warms the ruby’s red; white gold and platinum make it stand out by contrast. The choice depends mostly on the jewelry she already wears every day.
| Metal | Effect with a ruby | Choose it if… |
|---|---|---|
| 18k yellow gold | Warm, very classic, “vintage ring” feel | She mostly wears yellow gold. |
| 18k white gold | Sharp contrast, the red looks more vivid | She wears silver, white gold or a steel watch. |
| Platinum 950 | Lasting white, same contrast as white gold | You want a white metal that stays white, at the same price as gold. |
| 18k rose gold | Soft, tone on tone with the red | She loves romantic, original jewelry. |
What does a ruby engagement ring mean?
Ruby symbolizes passionate love, strength and courage: its color is that of the heart and of passion. Its name comes from the Latin rubeus, “red.” It is also the birthstone for July, and the stone of the ruby anniversary, which celebrates 35 years of marriage.
Choosing a ruby engagement ring instead of a diamond is a choice with character: a ring that gets noticed, that doesn’t look like all her friends’ rings, and that remains strong enough to be worn every day.
Can you wear a ruby every day?
Yes: with a hardness of 9 out of 10, ruby is, along with sapphire, the most durable precious stone after diamond. It is perfectly suited to an engagement ring worn every day. A few simple habits keep it sparkling:
- clean it in warm soapy water with a soft brush, then dry with a cloth;
- take the ring off for sports, gardening or household cleaning products;
- store it separately so that a diamond doesn’t scratch the metal or the stone.
At Laveran, every ring comes with a lifetime warranty, free lifetime resizing and free lifetime polishing and prong checks. The ring is made to order in 2 to 3 weeks and delivered free of charge, insured and hand-delivered, with returns accepted within 30 days.
FAQ
Is a synthetic ruby a real ruby?
Yes. A synthetic ruby, or lab-grown ruby, is red corundum: same chemical composition, same crystal structure and same hardness as a natural ruby. Only its origin differs. A “fake ruby” is an imitation made of another material.
How much does a 1-carat ruby cost?
At Laveran, a solitaire ring with a 1-carat lab-grown ruby costs €1,424, including the 18k gold or platinum setting. With a diamond halo, it is €2,024. The price of a 1-carat natural ruby varies enormously with its color and origin.
Does a lab-grown ruby lose its color over time?
No. Its color comes from the chromium in the crystal, just like a natural ruby. It is stable and does not fade with wear.
Can you see the difference between a lab-grown ruby and a natural ruby?
Not with the naked eye. Only a gemologist, using a microscope, can identify the origin from the inclusions and growth marks of the crystal.
Is ruby suitable for an engagement ring?
Yes. With a hardness of 9 out of 10, it is, along with sapphire, the most durable precious stone after diamond. It handles daily wear very well.
Which ruby shape should you choose?
Oval is the most requested because it elongates the finger. Round is the most classic, cushion more vintage and emerald cut more graphic. All are available at Laveran, from 0.30 to 5 carats.
Are ruby rings available in platinum?
Yes, in platinum 950 as well as 18k white, yellow or rose gold, at the same price whatever the metal.
How long does it take to receive a ruby ring?
Each ring is made to order in 2 to 3 weeks. For a Christmas proposal, order before the end of November. The exact lead time is confirmed at your appointment.
A ruby engagement ring gives you the red of a precious stone for the price of a classic ring. Come and compare settings, shapes and ruby sizes in one of our 11 showrooms or by video call: an expert will help you find the ring that suits her.
