Visit our eBay boutique The LDX guide
Understanding our stones.
Mined diamonds, laboratory-grown diamonds and SiC verified stones — what they are, how they are verified, and exactly what you are buying.
Mined
diamonds
Natural diamonds formed deep underground over billions of years. Mined, cut and graded, they set the traditional benchmark for fine jewellery — and carry a cost, and a footprint, that reflects their journey.
Laboratory-grown diamonds
IGI Certified
A laboratory-grown diamond is a real diamond — the same carbon crystal, grown under laboratory conditions that mirror the heat and pressure of the earth. Only a trained gemmologist with specialist equipment can tell it from a mined stone; the difference is origin, not quality.
- Every fine laboratory-grown diamond we sell is graded by IGI — carat, colour, clarity and cut — on an independent report.
- Our loose stones are IGI certified too, ready to be set however you choose.
- Because a diamond can be tested and verified as diamond, it carries full certification.
SiC verified
stones
Some of our pieces feature SiC verified stones — described on our eBay listings as “Lab-grown (SiC Verified): Diamond Selector Approved”.
- Each stone is verified by the Diamond Selector, confirming it as the genuine SiC stone we describe.
- Every piece arrives with our LDX Card of Authenticity.
- SiC stones deliver remarkable fire and brilliance — a bright, accessible choice within our collections.
At a glance
| Feature | Mined diamond | Lab-grown diamond Our collection | SiC verified stone Our collection |
|---|---|---|---|
| Origin | Mined from the earth | Grown in a laboratory | Grown in a laboratory |
| Composition | Carbon crystal | Carbon crystal — identical to mined | Lab-grown SiC stone |
| Verification | Seller’s certificate | IGI Certified — independent report | Diamond Selector Approved + LDX Card of Authenticity |
| Price | Highest | A fraction of mined | The most accessible |
Always know what you are buying. If a piece is IGI Certified, that is what it is. If it is SiC verified, that is what it is. We say it plainly on every listing — because trust is the whole point.
Find your stone