
How are lab diamonds made? A short explanation.
How are lab diamonds made, explained in a 1 minute video:
There are only two primary methods used to create lab-grown diamonds.
1. High Pressure High Temperature (HPHT)
Like the name suggests, this process replicated the diamond underground formation process by applying intense heat (over 1,500°C) and pressure (around 1.5 million PSI, or pound per square inch)
A small diamond seed is placed in a chamber with carbon and a metallic solvent, and the carbon crystallizes around the seed to form a diamond.
Commonly used to create industrial diamonds and larger gemstones.
2. Chemical Vapor Deposition (CVD)
Uses a lower-pressure chamber with a carbon-rich gas mixture (mostly hydrogen and methane) and a diamond seed substrate, which a small piece of diamond material.
Heat and microwaves break down the gas, causing carbon atoms to deposit layer by layer onto the seed, forming a diamond.
Often results in purer diamonds with fewer inclusions.
The more you know!