Wholesale CVD lab-grown diamonds.

What is a CVD lab-grown diamond?

A CVD (Chemical Vapor Deposition) diamond is a real diamond grown in a controlled laboratory environment. A diamond seed is placed in a chamber filled with a carbon-rich gas, and under precise heat and pressure, pure carbon crystallises onto the seed layer by layer. The result is chemically, physically and optically identical to a mined diamond — same hardness, same brilliance, same 4Cs grading.

CVD versus HPHT

HPHT (High Pressure High Temperature) is the other lab-grown method — it mimics the pressure of the earth's mantle. CVD tends to produce cleaner, more consistently colourless stones in larger sizes, which is why most modern wholesale supply is CVD. CVD stones offer predictable supply across colour and clarity grades at a fraction of the cost of a comparable mined stone.

Why jewellers source from Medina

We supply jewellers, designers and gem traders across Europe from our Antwerp office. Every CVD stone we sell is certified by IGI, one of the industry's most respected gemological institutes, so retailers can present the goods with full confidence and clear paperwork. Our live inventory covers rounds, calibrated melee and fancy shapes, with delivery in 1–3 working days after payment. Custom sourcing to specification is available within seven business days.

What we stock

• Round brilliants from 0.30 ct to 5.00 ct+, D–F colour, IF–VS2 clarity
• Calibrated melee parcels from 0.005 ct for pavé and halo settings
• Fancy shapes: oval, pear, emerald, cushion, radiant, princess, marquise (asscher and heart on request)
• IGI certification on every stone above melee