HPHT and CVD Diamond Growth Processes

More and more couples today choose to be environmentally conscious, whether it’s going for an organic way of living or buying lab grown diamonds for special occasions. Over the past few decades, lab grown diamonds have gained immense popularity as compared to naturally mined diamonds.

But, what exactly is a lab grown diamond? It is still a real diamond as its physical properties are identical. This is why it makes it difficult to tell the difference between a lab grown diamond and a natural one. In fact, even some experts have a tough time distinguishing between the two.


One of the primary differences between natural and lab-grown diamonds is that natural diamonds are formed deep within the crust of the Earth. Immense heat and pressure can cause carbon atoms to crystallize which can lead to forming diamonds. While lab grown diamonds are manufactured through two processes, HPHT and CVD. Let’s understand the growing process of both HTHP Diamonds and CVD diamonds.

HPHT Diamond Process

In this process, high pressures and temperatures are used to replicate nature’s process of diamond formation. One of the first steps of the HPHT diamond process is placing a small diamond seed into pure carbon. This diamond seed then goes through three manufacturing processes, heat and pressure, and split-sphere press. All these processes force carbon to melt, thus creating a diamond.

If you are looking for a lab-grown diamond to gift your loved one, contact ABD Diamonds. It is an HPHT Diamond manufacturer and they have quality diamonds in varying colors for all occasions. Whichever diamond you choose to go for, they are as real and attractive as the real ones.

Chemical Vapour Deposition Diamond Process

The other way man-made process is chemical vapour deposition (CVD). This process was initially introduced in the 1980s as an alternative to the HPHT process. This type of process is more apt for gem-quality diamond production. The diamond seed is placed into a growth chamber filled with carbon-containing and hydrogen gas. This chamber is then heated to extreme temperatures and pressures. There is a microwave beam that causes the carbon to stick to the diamond seed. This diamond then is removed from the chamber and polished up and placed back in to grow further.

Final words

Hopefully, the blog helped you understand all that you needed to know about HPHT and CVD diamonds. To know more about such diamonds or buy them, feel free to reach out to ABD Diamonds. It is a diamond manufacturer with diamonds of varying sizes and colors. All the best

Location: United States

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