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Chemical Vapor Deposition
Using the Chemical Vapor Deposition (CVD) method, diamonds are grown by putting carbon under high pressure and temperature. These two conditions mimic those in which natural diamonds were formed deep within the Earth’s mantle. The result is an optically and chemically identical diamond to that mined on Earth.
Several major gem labs grade laboratory grown diamonds. These can be a cost effective and wallet-friendly alternative to natural diamonds. However, they are not as durable as real ones. They have a limited life and their value can fluctuate over time.
The Chemical Vapor Deposition process uses ultra-pure carbon-rich gasses. This gas breaks apart carbon atoms and deposits them on a diamond plate. Once this occurs, the diamond grows until it reaches its desired size.
The CVD process can be used to create optics and semiconductors. It is also used to grow diamonds, which have the potential to be used in jewelry. Unlike the HPHT process, this method is relatively inexpensive and does not require the same amount of energy.
High Pressure High Temperature (HPHT)
High Pressure High Temperature (HPHT) is a method used to grow diamonds in a laboratory. It’s a well-known process that has been in use for decades.
HPHT uses high pressure, temperatures, and energy to mimic the conditions of the earth. These are the key factors in the process of growing a diamond. Unlike natural diamonds, HPHT diamonds can be created with a higher degree of control.
There are two main processes used to grow diamonds in a laboratory. CVD and HPHT. The process of creating a synthetic diamond using both techniques is relatively similar.
Unlike CVD, the HPHT process involves using heat and pressure to create a diamond. This method can also produce colourless diamonds.
In HPHT, the process begins by placing a small piece of diamond material in a chamber. Under a tremendous amount of pressure, carbon accumulates and forms a diamond around the seed. A diamond crystal is then created after about two weeks.
IGI and GIA certifications
When you buy a lab-grown diamond, you’ll want to find a certification to ensure that you’re buying the best quality. For most lab-grown diamonds, this means IGI or GIA. Here are a few things you should know about the two.
GIA is a nonprofit organization that was founded in 1931. It has a strict grading system and is widely recognized for its contributions to the jewelry industry. As of today, GIA is the leading grading body in the world.
GIA is not the only institution that offers certifications for lab-grown diamonds. Some of the other major labs include AGS and IGI. While these are the most well-known, you may want to check out other labs, as their reports may be more relevant to your needs.
The IGI is a well-known and highly respected gem laboratory that screens loose diamonds of all sizes, including lab grown diamonds. They are involved in the CAD design of jewelry and also grade rough diamonds. This makes them one of the most trustworthy labs for grading lab-grown diamonds.
Colors available
The market for lab grown diamonds has undergone a major change as new production technologies have reduced costs. Now, laboratory grown diamonds are valued at the same level as colorless D-color stones. They are also available in transparent and colored varieties.
Lab grown diamonds, also known as engineered diamonds, are produced in a laboratory in a controlled environment under extreme conditions. They are created by a process called chemical vapor deposition.
Lab grown diamonds are different from naturally occurring diamonds in many ways. First, they are made with carbon, not cubic zirconia. Second, they are not refractory like other gemstones. Third, they can be made in very short periods of time. For example, a one-carat lab grown diamond can be ready in just two weeks.
The best quality lab created diamonds have high clarity and high color. In addition, they are more affordable than natural diamonds.
The color of a laboratory-grown diamond is determined by its defect-impurity composition of the diamond crystal lattice. Among the factors that influence color saturation are boron, nitrogen and the concentration of impurity centers.
