Wholesale — Antwerp · Mumbai · Hong Kong
Belford International supplies certified lab-grown loose diamonds to trade buyers, wholesalers, and jewellers worldwide. Exceptional quality. Consistent supply. Competitive pricing.
About Belford International
Belford International is a dedicated wholesale supplier of lab-grown loose diamonds, operating across three continents. We work exclusively with trade buyers — jewellers, goldsmiths, designers, and distributors — providing consistent access to certified stones at transparent pricing.
With a presence in Antwerp, Mumbai, and Hong Kong, we combine proximity to the world's foremost trading centres with direct access to production at source. Every stone in our inventory is independently certified and available for inspection prior to purchase.
Lab-Grown Diamonds
Lab-grown diamonds are chemically, physically, and optically identical to mined diamonds. The only difference is how they are formed: rather than millions of years of geological pressure, they are cultivated in controlled environments over a matter of weeks.
The result is a diamond of the same hardness (10 on the Mohs scale), the same refractive index, the same thermal conductivity — indistinguishable from a mined stone without specialist equipment. For trade buyers, this translates into a reliable, affordable, and responsibly sourced product with growing consumer acceptance worldwide.
Diamond Comparison
For trade buyers making purchasing decisions, the relevant differences between lab-grown and mined diamonds are commercial rather than physical. This comparison covers the criteria that matter to jewellers and wholesale buyers.
| Attribute | ◆ Lab-Grown Diamond | Natural Diamond |
|---|---|---|
| Chemical Composition | Pure carbon — identical crystal structure (sp³) | Pure carbon — identical crystal structure (sp³) |
| Hardness (Mohs) | 10 — hardest known material | 10 — hardest known material |
| Refractive Index | 2.417 — identical to mined | 2.417 |
| Colour Range | ✓ D–Z + Fancy Colours | D–Z + Fancy Colours |
| Clarity Range | ✓ FL to SI2 available | FL to I3 (inclusions from nature) |
| Certification | ✓ IGI / GIA certified | GIA / AGS / HRD certified |
| Price per Carat (wholesale) | ✓ 60–80% lower than mined | Significantly higher |
| Price Stability | Declining gradually as supply increases | Volatile — linked to mining output & demand cycles |
| Supply Consistency | ✓ Reliable, scalable production | Subject to mine depletion & geopolitical risk |
| Environmental Impact | ✓ Lower land disturbance; improving energy profile | Open-pit and underground mining; significant land use |
| Consumer Perception | ✓ Strongly growing, especially under 35 | Established but declining among younger buyers |
| Distinguishable by eye | No — requires specialist equipment | No — requires specialist equipment |
| Resale Value | Lower secondary market — priced as commodity | Secondary market exists but inconsistent |
| Availability of fancy shapes | ✓ Round, princess, oval, pear, marquise, cushion, emerald | All shapes available; rare shapes carry significant premium |
Contact Us
We work with jewellers, goldsmiths, designers, and distributors worldwide. Whether you need a single stone or a standing parcel order, fill in the form below and our team will be in touch.
Trade Portal
Live pricing, inventory, and parcel ordering are available to registered trade buyers. Contact us to request access.