HPHT Vs CVD – What’s the Difference?

Choosing between HPHT and CVD is something that can often be difficult, but thankfully there are a few key differences that make the two technologies unique. These include cost, color zoning, crystal morphology, and blue nuance. Having a good understanding of the differences between these technologies can help you decide which type is right for your home.

Color zoning

If you’re buying a diamond for the bling bling factor, you’ll be happy to know that both hpht vs cvd are able to deliver. In fact, both methods can yield diamonds of different color. In addition to color, each technique can produce gems with metallic or mineral inclusions. This means that you may want to choose your sexiest bling bling carefully.

While the difference between the two is often a matter of opinion, you can’t deny that both are capable of producing colorless diamonds. This isn’t to say that both techniques are equally successful. The most important determinant is the morphology of your chosen gem. A natural diamond is subjected to the stress of a fiery eruption on the earth’s surface and may have a large number of optical centers. The more of these, the better.

Unlike natural diamonds, synthetic diamonds are grown in a relatively uniform pressure environment. This results in a faster, more predictable growth process. Nevertheless, you’ll need to wait for weeks before you see a finished gem.

Crystal morphology

Crystal morphology refers to the structural morphology of minerals and other materials. The crystal growth shape indicates how the surface is formed and helps scientists to identify the formation conditions. The growth history is usually regulated by external and internal parameters.

Traditional crystal morphology nomenclature was based on the presence or absence of crystal faces. For instance, a dendritic crystal has two faceted faces and a hopper crystal has only one face.

The morphology of a crystal depends on its growth rate and is related to the bonding energies of the crystal faces. In addition, the interrelation between the crystals also plays a significant role. In particular, the interaction between the growing crystals is important for generating textures. Moreover, the geometrical and size distributions of the crystals affect the growth rates.

In addition, the solvent effect has been well studied theoretically and can influence the growth of crystals. However, the influence of the solvents on crystal morphology has been limited due to the cost and purity requirements.

Blue nuance

Blue nuance in diamonds is a matter of concern for most shoppers. The most common misconception is that blue nuance is a defect in lab-grown diamonds. In reality, it is a purely aesthetic feature of the diamond.

A blue diamond can be seen as an indicator of beauty. The nuance can also be a sign of brilliance and sophistication. But it does not affect the overall look and feel of the diamond.The presence of blue hue in a diamond is not uncommon, but detecting a significant amount of it is a challenge. Most of these gemstones will display a pale blue or grey color.

The presence of fluorescence in a diamond is not a requirement for its resale value. Rather, it is an indicator of its color-reflecting ability. Some types of diamonds glow yellow or green when exposed to ultraviolet light.Although these are the most common forms of sparkle, a diamond’s true color is not visible to the human eye. But there are a number of ways to enhance the color of a diamond.


There are two major methods for producing diamonds, the chemical vapor deposition (CVD) and high pressure, high temperature (HPHT). In this article, we will compare these methods and their cost.Both CVD and HPHT are highly effective and can create high quality diamonds. However, they do have some differences.

While it is a bit of a controversy as to which method is better, they both have the potential to produce high quality lab grown diamonds. The cost of the lab grown diamond will depend on the diamond vendor and the setting. For example, the cost of cvd vs hpht is lower and requires less energy. It can also produce diamonds with higher clarity. It is more environmentally friendly.

Last speech

Generally speaking, the HPHT method is better for producing diamonds that are yellow. The CVD process, meanwhile, produces more desirable diamonds.The CVD diamond is usually a brownish color. This is due to the carbon used during the growing process.

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