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HPHT vs CVD Diamond Guide| LGDeal

Flavia Calina by Flavia Calina
September 30, 2022
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Today lab-grown diamonds are created using 2 common technologies. They are CVD (Chemical Vapor Deposition) and HPHT (High-Pressure High Temperature). Before you buy your first lab-created diamond, make sure you understand the difference between the two techniques (HPHT vs CVD diamond).

What are HPHT lab-grown diamonds?

HPHT is a popular and reliable technique that manufacturers use to produce lab-grown diamonds.

The HPHT production process is pretty simple; it involves treating less attractive diamonds to extremely high temperatures and high pressure (1500 °C & roughly 1.5 million pounds of pressure per square inch). This process is possible with the help of special machinery in the laboratory. The main objection to growing these diamonds at a high temperature and high pressure is to mimic the natural diamonds` growth under the soil.

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In addition, during the HPHT process, graphite or any other carbon source is reacted with a few chemicals and a molten metal catalyst.

What are CVD lab-grown diamonds?

CVD is also an effective technique for creating lab-grown diamonds. Unlike HPHT, which requires extreme temperature and pressure, the CVD process is more energy-saving, as it requires less temperature of 800 °C.

A thin seed diamond is added inside a sealed chamber. After that, the chamber is exposed to a temperature of about 800 °C. Next, a carbon-rich gas mix (hydrogen and methane) is introduced to the chamber. Inside the chamber, an ionization process often takes place, breaking away every molecular bond in the carbon gasses. With the ionization process, free and pure carbon sticks and accumulate to the thin seed diamond, forming something that mimics the shape of a natural diamond.

HPHT vs CVD diamond: how do they differ?

Apart from the temperature and pressure difference between HPHT vs CVD, the biggest difference between them is their morphology – how the structure is formed. Unlike HPHT diamonds, which are grown in 14 directions, CVD products only grow in 1 direction.

Furthermore, the CVD process allows lab-grown diamond producers to create high clarity and color stones.

Where to buy the best HPHT & CVD diamonds wholesale?

When it comes to buying HPHT diamond and CVD diamond wholesale, one platform you can rely on is LGDeal. LGDeal is a B2B marketplace that allows buyers to connect with trusted lab-grown diamond manufacturers directly. On this platform, you’ll discover different high-quality lab-grown diamonds that will suit your budget. 

I’m happy to offer you the best IT service, totally FREE, all-in-one place, with 24/7 IT support. More than 170K stones with 0% mark-ups are waiting for you!

Join LGDeal to get the best deals!

https://lgdeal.com/

Also Read: Buy Viking Necklaces From Relentless Rebels That Will Make You Stand Out.

Tags: CVD is also an effective technique for creating lab-grown diamondsHPHT vs CVD Diamond
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