How Lab Diamonds Are Made | The CVD Process Explained
How Lab Diamonds Are Made: The CVD Process Explained
Lab diamonds are no longer a mystery. Thanks to cutting-edge CVD technology, real diamonds can now be grown in a lab instead of mined from the earth. This post breaks down how it works, with insights from BBC Click and New Grown Diamond.
Step 1: The Diamond Seed
Every lab diamond begins as a small crystal called a diamond seed — a thin slice of pure carbon derived from a natural diamond. This seed acts as the foundation for new crystal growth. It’s carefully polished and prepared to the ideal thickness before entering the CVD plasma reactor.
Step 2: The Plasma Reactor
Inside the reactor, gases such as methane are heated until they turn into plasma. The carbon atoms within the plasma attach to the diamond seed layer by layer, mimicking the same natural formation that happens underground over millions of years. In just six weeks, a fully formed diamond crystal emerges.
Step 3: Cutting and Polishing
Once grown, the rough lab diamond is cut, shaped, and polished just like a mined diamond. Expert cutters in Surat, India — known as the world’s Diamond City — handle much of this intricate work. In fact, the same polishing techniques apply to both mined and lab diamonds, and even professional gemologists can’t tell them apart without specialized equipment.
Step 4: Certification and Quality
At Future Jewellery, each lab diamond is independently certified by IGI for color, clarity, and cut. These are not imitations like cubic zirconia or moissanite — they’re genuine carbon diamonds with identical optical and physical properties to natural gems.
Why Choose Lab Diamonds?
- Same Beauty. Chemically identical to mined diamonds.
- Better Value. Save up to 80% compared to natural stones.
- Eco-Friendly. Made using renewable energy instead of mining.
- Certified Quality. Every piece verified by leading gemological labs.
India now produces around 3 million lab-grown diamonds annually, about 15% of global supply — a number that continues to rise as the world embraces sustainability in fine jewelry.
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