How HPHT lab grown growing?

Stands for "High Pressure High Temperature." It is a process that is used to create lab-grown diamonds. Lab-grown diamonds are diamonds that are created in a laboratory setting, rather than being mined from the earth. The HPHT process involves recreating the

high pressure and high temperature conditions that exist deep within the earth, where natural diamonds form. In this process, a small diamond seed is placed in a metal container and subjected to extremely high pressure and temperature. As the conditions within

the container are carefully controlled, the seed begins to grow, forming a larger diamond crystal. The resulting lab-grown diamond is chemically, physically, and optically identical to a natural diamond, but it can be produced much more quickly and at a lower

cost than mining a diamond from the earth.

The HPHT method is the original method of creating lab-grown diamonds. Gem quality HPHT diamonds were introduced in the 1950s. Outside of growing diamonds, the HPHT process can also be used to enhance the color of diamonds to make them colorless, pink, green, blue, or yellow.

To grow an HPHT diamond, a small diamond seed is placed in carbon, the element that diamonds are made of. The diamond seed is exposed to extreme heat and pressure, replicating the way diamonds are naturally grown underground by the earth. The diamond seed is exposed to temperatures of over 2,000 degrees Fahrenheit and pressure of about 1.5 million PSI (pounds per square inch). The carbon melts and forms a diamond around the seed. It is then cooled and the diamond is formed.

A rough HPHT diamond forms differently than a rough CVD diamond. HPHT diamonds grow into a cuboctahedron, while CVD diamonds grow into a cube-like shape.

HPHT diamonds are more likely to have a yellowish hue because they are exposed to nitrogen while forming. They also tend to have darker inclusions, which are metallic. These metallic inclusions can help scientists identify them as lab-grown because naturally formed diamonds rarely capture metals during formation.

The metallic inclusions in HPHT diamonds can make the stones magnetic. This is another way to tell if a diamond is lab-grown – natural diamonds are not magnetic. A 2012 study revealed that over half of the HPHT diamonds tested registered a detectable magnetic response.

HPHT diamonds occasionally have what is called a "blue nuance." This gives the diamond a subtle blue hue.

This blue color is a result of the boron impurities that HPHT diamonds can be exposed to. Boron is also what creates fancy blue diamonds. Make sure to view HD images and/or videos of your diamond to see if it has a blue nuance.

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