How Are Lab Grown Diamonds Made?
The Science Behind Our Lab-Grown Diamonds
Every TrueLustre lab-grown diamond is created using advanced technology that mimics the natural conditions deep within the Earth, producing stones that are chemically, physically, and optically identical to mined diamonds.
What It Takes to Grow a Diamond
To replicate the natural formation process, we need three key elements:
- Carbon: The building block of every diamond, sourced from pure, high-grade graphite
- Seed Crystal: A tiny, carefully selected diamond seed, which acts as the “foundation” for the new stone
- Precise Conditions: Extreme heat, pressure, and a controlled environment to allow carbon atoms to crystallize
1. HPHT: High Pressure High Temperature
This method simulates the conditions found 150-200 km below the Earth’s surface.
- Conditions: 1,500°C+ heat and 5-6 GPa of pressure
- Process: The diamond seed and carbon source are placed in a growth cell, then subjected to extreme heat and pressure. Over several weeks, carbon atoms attach to the seed, growing into a rough diamond crystal.
- Result: Pure, high-quality diamonds with the same crystal structure as natural diamonds.
2. CVD: Chemical Vapor Deposition
This method grows diamonds layer by layer in a controlled vacuum chamber.
- Conditions: 800-1,000°C heat, low pressure, and a gas mixture of carbon-rich methane and hydrogen
- Process: The diamond seed is placed in a vacuum chamber, where the gas mixture is heated into plasma. Carbon atoms from the gas stick to the seed, building up the diamond crystal atom by atom.
- Result: Clean, high-clarity diamonds with consistent quality and minimal environmental impact.
From Rough Crystal to Sparkling Diamond
Once the rough crystal is formed, it undergoes three critical steps:
- Precision Cutting & Polishing: Our master cutters shape the crystal into brilliant cuts, maximizing light performance and sparkle.
- Quality Testing: Every diamond is tested for its 4Cs (cut, color, clarity, carat) and certified by IGI, confirming its authenticity and quality.
- Ethical Verification: All our diamonds are 100% conflict-free, with full traceability from the lab to your jewelry box.
At TrueLustre, we combine science, precision, and ethics to create diamonds that shine as bright as your love.