The house of GMIR
The same diamond. A new conscience.
A laboratory-grown diamond is a diamond: same carbon, same structure, same hardness. Only its birth differs — a few weeks in a reactor rather than millions of years underground. Here is what that changes, and what it does not.
A diamond, without reservation
It is not a cubic zirconia, nor a moissanite, nor an imitation: it is crystallised carbon, identical in formula and structure to the mined stone, and rated 10 on the Mohs scale — the maximum. No gemmologist will say otherwise.
Weeks rather than millions of years
It begins with a sliver of diamond, a seed. Placed in a carbon atmosphere at high temperature, it grows layer by layer, atom by atom, into a rough stone. Our stones are born through chemical vapour deposition — the CVD process. The cutting and polishing remain the work of a lapidary, by hand, as they always have been.
What does not change
The same refractive index, therefore the same fire: the same light returned, the same brilliance by candlelight as in broad daylight. Only an equipped laboratory can tell a grown stone from a mined one — and it says so on the certificate.
What does change
No mine, no earth displaced, no conflict zone in the supply chain. Growing a diamond does take energy, and we will not pretend otherwise; but it hollows out no landscape and displaces no one.
Colour, at last within reach
In nature, a diamond of frank colour is extraordinarily rare — a handful of stones a year for certain hues, at prices that confine them to the auction room. In the laboratory, mastery of the growing conditions brings those colours within reach. It is what makes our six collections possible, from the blue of Rivière to the pink of Amour.
A certificate, piece by piece
Every stone comes with an independent laboratory report: unique number, carat weight, colour, clarity and cut. You know what you are wearing, and you can prove it.