The Diamond
Same carbon. Same hardness. Same certificate. A shorter story, and nobody had to dig for it.
The diamond
Made on purpose.
A laboratory-grown diamond crystallizes in weeks inside a chamber rather than over a billion years underground. Identical structure, identical optical properties, the same answer to light. A gemologist needs equipment to tell; by eye, no one can. They are created two ways: HPHT, which reproduces the pressure and heat of the earth's mantle, and CVD, which deposits carbon layer by layer onto a seed. Your IGI report states which was used.
Same carbon. Same hardness. Same fire. The only difference is the biography.
| Laboratory | Mine | |
|---|---|---|
| Composition | Carbon | Carbon |
| Hardness | 10 / 10 | 10 / 10 |
| Brilliance and fire | Identical | Identical |
| Provenance | We know the exact day | It's a long story |
| Conflict | Zero blood. Just carbon. | Depends who you ask |
| Intense color | Pink, blue, green — genuinely attainable | International auction prices |
| Rare cuts | Kite, pentagon, cadillac — no drama | Special order and patience |
| For the same budget | More carat, better color, better clarity | Less of everything |
| Wait time | A few weeks | ≈ 1,000,000,000 years |
A note of candor: a laboratory-grown stone is not an investment instrument. Resale value is modest. You buy it because it is beautiful.
Vocabulary
Carat, color,
clarity, cut.
Carat
Weight, not size. One carat is 0.20 grams. Two stones of equal weight can look different face-up: a deep cut hides its weight downward.
Color
Whites run D, colorless, to Z. Colored stones use another scale: Fancy Light, Fancy, Fancy Intense, Fancy Vivid, Fancy Deep. That is where we live.
Clarity
From FL and IF, flawless, down through VVS, VS, SI to I. The report includes a plot showing where each internal mark sits.
Cut
The only one of the four made by a human hand. It governs brilliance — and, in a colored stone, how much color you see.
Certification
The paper.
The International Gemological Institute is one of the world's reference laboratories for laboratory-grown stones. Each of ours arrives with its own. It is worth knowing how to read one — not only ours, anyone's.
- Report Number
- The report's unique number. Use it to verify the stone at igi.org.
- Laboratory Grown
- This line must always appear. Without it, it is not a laboratory-grown report.
- Growth Method
- HPHT or CVD. How the stone was formed.
- Shape and Cutting Style
- The cut by its technical name — from round brilliant to kite, pentagon or Dutch marquise.
- Color Grade
- On a colored stone, the full fancy description: intensity, hue and tone. It is the line we read most closely.
- Carat Weight
- Exact weight, usually to two decimals.
- Measurements
- Millimeters. This is what actually tells you the face-up size.
- Clarity Grade
- FL through I3, accompanied by the clarity plot.
- Cut · Polish · Symmetry
- Cut, polish and symmetry quality. The cut grade applies only to rounds.
- Fluorescence
- Its reaction under ultraviolet light. None, Faint, Medium, Strong.
- Laser Inscription
- Many stones carry the number inscribed on the girdle. Read it with a 10× loupe.
- Comments
- Laboratory notes. Always worth reading.
At igi.org, under Report Check, enter the number and the report appears. It can be done during the live, before deciding. We consider it the healthiest habit in the trade.
The making
Fifty days.
People assume a grown diamond is quick. It is not. It is patient in a different place — and for most of those weeks, a person is watching it. A wafer of seed diamond sits in a methane-hydrogen plasma at 900–1,200 °C while carbon settles onto it one atomic layer at a time. Every few days the plate comes out, is re-polished by hand, and goes back in.
| Stage | Days |
|---|---|
| Seed preparation and reactor load | 1 |
| Growth in the reactor | 21–28 |
| Separation, mapping and marking | 3 |
| Sawing, bruting and blocking | 3 |
| Brillianteering and final polish | 4–6 |
| IGI certification | 15 |
| From seed to certificate | 47–56 |
Where the days go — 49.5 days, typical
Hours of skilled human attention
Roughly 80 of them are a cutter's hands on a cast-iron scaife charged with diamond dust. Nothing leaves us uncertified — every stone goes to the IGI, and we do not chase that fifteen days down.
You are not paying for scarcity.
You are paying for the days.