Diamond guide
Natural vs lab-grown diamonds
The same material, formed two very different ways. For a retailer the real distinction is not chemistry but rarity, value retention and disclosure. Kiran trades in natural diamonds.
| Natural | Lab-grown | |
|---|---|---|
| Origin | Formed in the earth over billions of years, then mined. | Grown in a few weeks in a reactor by CVD or HPHT. |
| Composition | Crystallised carbon. | Crystallised carbon, physically identical. |
| Rarity | Finite; each stone is geologically unique. | Producible at scale; not rare. |
| Grading | GIA, IGI or HRD report on the 4Cs. | Certified and identified as laboratory-grown. |
| Value over time | Holds rarity and provenance value. | Prices have fallen as production capacity has grown. |
| Disclosure | Sold as a natural diamond. | Must be disclosed as laboratory-grown in writing. |
What it means for margin and resale
Lab-grown carries a lower buy-in and, for now, a higher percentage markup, which suits a fashion price point. The trade-off sits on the back end: falling wholesale prices compress resale, trade-in and repair-replacement values, and a client who paid this year may see a lower figure next year. A natural stone anchors an heirloom position and a valuation that holds, which is the story most fine-jewelry retailers are built on.
Disclosure and nomenclature
Trade rules are firm: a grown stone must be described as laboratory-grown, lab-grown or synthetic, and the word natural, or an unqualified diamond, is reserved for mined stones. Getting this right protects the retailer as much as the client. Kiran labels every line by origin so the disclosure travels intact from our invoice to the counter.
Where Kiran stands
Kiran Jewelry works exclusively in natural diamonds, drawn from Kiran Gems’ own production as a De Beers Sightholder and RJC-certified member. Every stone is certified and traceable.
Read more on responsible sourcing, the grading report behind each stone, or request trade access to buy at your account pricing.
Common questions
Can a jeweller tell natural and lab-grown apart?
Not by eye, since both are crystallised carbon with the same optical properties. They are separated by laboratory instruments that read growth patterns and trace elements, and every graded stone is identified on its report as natural or laboratory-grown.
Do lab-grown diamonds hold their value?
Generally no. Because they can be produced at scale, wholesale and resale prices have fallen steadily as capacity has grown. Natural diamonds are finite, which is why they hold rarity and provenance value over time.
How must lab-grown be disclosed at point of sale?
Clearly and in writing. Trade guidance requires the term “laboratory-grown”, “lab-grown” or “synthetic”; “natural” or an unqualified “diamond” may not be used for grown stones. Kiran labels every line by origin so the disclosure carries through to the retailer.
Why does Kiran sell only natural diamonds?
Kiran Jewelry draws on Kiran Gems’ own natural production as a De Beers Sightholder and RJC-certified member. Rarity, provenance and lasting value are central to what the house offers its trade partners.
