CVD diamonds are human-made diamonds, but are identical to natural diamonds and are 100% authentic diamonds. In fact, it is impossible to tell a CVD diamond apart from a natural diamond without specialist equipment.Â
Lab diamonds are becoming an increasingly popular choice amongst engagement ring and jewellery buyers – and along with HPHT, CVD is one of the most commonly used production methods. Some of the benefits of CVD diamond jewellery include more ethical origins, sustainability and cheaper prices.
Properties of CVD
1 Chemically Identical: CVD diamonds are chemically identical to natural diamonds.
2 High Purity: They typically have fewer impurities than mined diamonds.
3Â Brilliant Sparkle: CVD diamonds exhibit the same brilliance and fire as natural diamonds.
4 Customizable: The growth process allows for precise control over size, shape, and color.
5 Eco-friendly: CVD diamonds have a lower environmental impact compared to mined diamonds.
Process of CVD
Diamond Seed Placement: A small diamond seed is placed in a vacuum chamber.
Gas Introduction: Carbon-rich gases, like methane and hydrogen, are introduced into the chamber.
Plasma Formation: The gases are heated or ionized into plasma using heat or microwave energy.
Carbon Atom Deposition: Carbon atoms from the plasma bond to the diamond seed.
Layer-by-Layer Growth: The diamond grows layer by layer as carbon atoms continue to deposit.
Final Removal: Once the diamond reaches the desired size, it is removed from the chamber.
Cutting and Polishing: The rough diamond is cut, polished, and shaped into a finished gem.
