Lab Grown Diamonds

Lab-grown diamonds are genuine diamonds in every sense — chemically, optically, and physically identical to those mined from the earth. They share the same carbon crystal structure, remarkable hardness, and captivating brilliance that define natural diamonds.

What sets them apart is their origin. Instead of forming deep within the Earth over billions of years, these diamonds are created in advanced laboratories under precise conditions that replicate nature’s process — producing real diamonds with a modern, ethical, and sustainable approach.

Modern technology has made it possible to replicate the natural conditions that form diamonds deep within the Earth. Today, two primary methods are used to produce gem-quality lab-grown diamonds: HPHT and CVD.

1. HPHT (High Pressure, High Temperature)

The HPHT process recreates the extreme heat and pressure found in the Earth’s mantle. A tiny diamond “seed” is placed in a press along with a carbon source—often graphite—and a metallic catalyst. The chamber is then subjected to intense conditions, reaching around 1,300–1,600 °C and immense pressure.

Under these conditions, carbon atoms dissolve and crystallise around the seed, forming a new diamond crystal. Once grown, the crystal is carefully cooled, cut, and polished into a finished diamond.

This method produces diamonds that are physically and optically identical to mined diamonds and is often used for both colourless and fancy-coloured stones.

2. CVD (Chemical Vapor Deposition)

The CVD method begins with a thin diamond seed placed in a sealed vacuum chamber. The chamber is filled with carbon-rich gases—commonly methane—which are ionised into a plasma using microwaves or other energy sources.

Carbon atoms from the gas then attach to the seed, depositing layer by layer and gradually building the diamond structure. Unlike HPHT, this technique uses lower pressures and allows greater control over temperature and gas composition.

The result is a highly pure diamond crystal, often with exceptional clarity and fewer metallic inclusions. CVD growth also enables manufacturers to fine-tune conditions for larger or uniquely coloured diamonds.