Diamond origin · Lab-grown
Engagement Rings with a Lab-Grown Diamond
A lab-grown diamond is a full-fledged diamond — it has the same physical, chemical and optical properties as a natural one. For the same budget it usually allows for a larger or cleaner diamond, and its origin is transparent — for diamonds from 0.30 ct documented by an IGI or GIA certificate.
The same sparkle and hardness, a different path to formation — the diamond grows in a controlled way in a laboratory over a few weeks instead of billions of years in the Earth. The difference lies in the more affordable price and verifiable origin, not in beauty.
- IGI · GIA certificate from 0.30 ct
- Our own Czech goldsmith workshop
- We usually reply within 24 hours
Collection · Lab-grown diamond
Selected designs with a lab-grown diamond
Choose an engagement ring with a lab-grown diamond just the way you imagine it.
Step by step
How a lab-grown diamond is made
From a carbon seed to a certified diamond — in four steps.
- 01
Carbon seed
A thin slice of a natural or lab-grown diamond serves as the "seed" — the nucleus on which the new crystal begins to grow atom by atom.
- 02
Controlled CVD or HPHT growth
CVD: the seed sits in a chamber with hydrocarbon gas, and ionised carbon atoms layer into the crystal lattice. HPHT: pressure over 6 GPa and temperatures above 1,400 °C mimicking the conditions of the Earth's mantle.
- 03
Cutting and polishing
The rough crystal goes to a diamond cutter, who works it into the chosen shape — round brilliant, oval, emerald, pear. The process is identical to that for a natural diamond.
- 04
IGI · GIA certification
An independent gemological laboratory measures the 4Cs, confirms the "laboratory grown" origin and issues an LGDR report with a laser inscription on the diamond's girdle. For diamonds from 0.30 ct this is included as standard.
What to know about this choice
What a lab-grown diamond is
A lab-grown diamond is a real diamond made of pure carbon, created in a controlled way in a laboratory — not an imitation such as moissanite or cubic zirconia. Two methods are used: CVD (depositing carbon from gas, "chemical vapour deposition") and HPHT (high pressure and temperature, which mimic the conditions in the Earth's mantle).
The resulting crystal has the same structure, a hardness of 10 on the Mohs scale and the same refraction of light. Neither visually nor with ordinary gemological instruments can it be distinguished from a natural one; only specialised laboratories can tell them apart, and they also certify the diamond.
The same beauty, a more affordable price
Because it is a diamond both physically and optically, in a ring it looks just like a natural one — the same sparkle, the same fire, the same durability for everyday wear. What differs is the path to its formation, and that is precisely what is reflected in the price.
At the same 4Cs (cut, colour, clarity and carat weight) a lab-grown diamond is usually more affordable. For an engagement ring this means a simple choice in practice: for the same budget you can get a larger or cleaner diamond, or put more into the quality of the setting. It is not a discount — it is the result of a shorter and more predictable supply chain.
Transparent certification and origin
For diamonds from 0.30 ct we include an independent IGI or GIA certificate — the laboratories assess the 4Cs just as they do for natural diamonds, and for lab-grown ones they issue an LGDR report (Laboratory-Grown Diamond Report). The diamonds are usually also laser-inscribed directly as lab-grown, so their origin can be traced at any time.
In terms of origin, the production is transparent and traceable, with no link to mining. With natural diamonds we take care over ethically clean provenance and the supply chain; with lab-grown ones the origin is verifiable by the very nature of how they are made. We describe both options fairly and leave the decision to you.
Natural vs lab-grown
A fair comparison of both paths — where they agree and where they differ. If you are interested in a diamond with a unique geological origin, take a look at engagement rings with a natural diamond.
Neither option is "better" — they are two honest paths to the same diamond. A natural diamond carries a unique geological story and a different value curve; a lab-grown one offers the same beauty at a more affordable price and with verifiable origin. During a consultation we will show you both in person and help you choose according to your priorities.
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| Property | Natural diamond | Lab-grown |
|---|---|---|
| Composition and hardness | carbon, 10 Mohs | carbon, 10 Mohs — identical |
| Appearance and sparkle | full brilliance | visually indistinguishable |
| Formation | billions of years in the Earth | weeks in a laboratory (CVD / HPHT) |
| Certification from 0.30 ct | GIA · IGI · HRD | IGI · GIA (LGDR report) |
| Price at the same quality | higher | more affordable |
| Size for your budget | smaller diamond | usually larger or cleaner |
| Value over time | unique origin, different value curve | affordable purchase price |
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Browse further
Engagement rings
Back to the main overview — all metals, cut shapes, setting styles and both diamond origins.
Facet · originWith a natural diamond
A diamond with a unique geological origin — GIA · IGI · HRD certificate from 0.30 ct.
Facet · metalIn white gold
A cool, neutral sheen that lets the brilliance of the diamond shine.
Frequently asked questions
Consultation
Choose an engagement ring with a lab-grown diamond
A no-obligation personal consultation — you'll compare a natural and a lab-grown diamond in person and together we'll choose a bespoke design.