Five states, one signature.
A commission is a documented passage from a routine appointment in your own city to a finished, gradable stone. Every stage is deliberate; the one thing we ask of you is simple.
Commission & the Repository Capsule.
Every CEPHI piece begins as a private conversation.
In your consultation we define the stone — line, carat ambition, colour, cut and setting — and open your commission dossier. On confirmation, your Repository Capsule is dispatched to your residence by insured courier: a sealed vessel registered under the alphanumeric sequence that will follow your material for the life of the commission — the only container your sample will ever occupy.
Let a professional do it. Truly.
We ask you not to cut the sample yourself. The harvest belongs in the hands of someone who does it every day.
At your next routine appointment, your trusted hairdresser, barber or master pet groomer sets aside the clippings they would ordinarily discard and seals them into the Repository Capsule. It adds nothing to the appointment but a moment of care — no separate visit, no awkward self-cutting, no compromised result. A short instruction card travels with the capsule so your professional knows exactly what is needed.
5.0grams
| Quantity | 5.0 gramsClean, dry clippings; a kitchen scale confirms it in seconds. The measure scales with carat — 3.0 g grows a one-carat stone; 5.0 g, one and a half. Your exact measure is confirmed at consultation. |
|---|---|
| Volume equivalent | A lightly compressed tennis ballOr one tightly packed measuring cup. |
| Root or follicle | Not requiredThe medium is carbon. Clipped lengths carry it in full. |
| If the coat runs short | Keep & accumulateFill the capsule across several appointments; seal only when the measure is met. |
For your professional
Dry clippings only; no product, dye residue or water. Any natural length is suitable. Combine clippings from both partners, or from multiple companions, in the same capsule if the commission calls for it. Close the capsule firmly and completely — the seal is what protects the chain of custody.
Return & registration.
The sealed capsule returns to the Maison by insured courier or by hand.
On arrival, your sample is logged against its engraved sequence and its Certificate of Biological Origin is opened. From this point an unbroken, independently documented chain of custody records every step your material takes — the assurance that the carbon leaving as a stone is the carbon that arrived in your capsule.
Crystallisation, on film.
Your material is purified to elemental carbon and introduced to a diamond seed under mantle-grade conditions, in a sealed growth cell occupied by your commission alone.
The precise moment your carbon signature initiates growth within the seed crystal is captured as a private, high-definition cinematic record — the beginning of your stone, documented rather than described. Over the days that follow, the crystal grows atom by atom. The full method is set out in the science.
Artistry & delivery.
The rough crystal passes to our master jewellers.
It is hand-faceted, polished to the specified cut and, if you wish, set in platinum or gold. Your finished commission is delivered with two documents that travel with it always: the physical Certificate of Biological Origin bearing its alphanumeric sequence, and the private video archive it corresponds to. Independent IGI certification accompanies every stone.