What Are CVD Diamonds: Complete Guide.

Diamonds are the most popular form of jewelry around the world. Not many must have heard the term CVD Diamonds.

Diamonds are a symbol of luxury, beauty, and wealth. Saying that diamonds are also expensive and not everyone can afford them.

So, there are a few options to consider. One is to choose a lab-grown diamond or a man-made diamond.

These diamonds are grown in a lab, instead of being found in nature. Lab-grown diamonds are also called cultured diamonds.


What Are CVD Diamonds

CVD stands for Chemical Vapor Deposition: In other words, a method to create a diamond in Lab.

Many call them synthetic diamonds, cultured diamonds, and engineered diamonds.

CVD diamonds were developed in the 1980s. They are the latest type of lab-created diamonds to hit the market.

Also, they are quickly becoming the most preferred type of diamond due to their increased hardness and size.

CVD Diamonds are created by a chemical vaporization method called CVD.

The CVD diamonds are created so perfectly that it is very hard for the untrained eye to recognize the difference.

The diamonds that are created with this method are not only cheaper than natural diamonds but are also made from recycled materials.

CVD diamonds

How CVD Diamonds Are Made?

Chemical vapor deposition diamonds are made through a process that takes place in a lab.

To understand in a simple way, this process starts with a very small diamond seed and requires a lot of heat and pressure.

The process starts with the chamber being filled with carbon gas and heated to 800 degrees Celsius.

This process is then repeated for about a few weeks until the formation of a full diamond.

How CVD Diamonds Are Made

In other words, this process starts with a high-energy plasma that is used to melt a carbon sheet that is then deposited onto a silicon wafer.

The carbon sheet is deposited in a very thin layer and is then heated to a high temperature that breaks down the graphite within it into carbon atoms.

These carbon atoms then combine with the silicon atoms, forming silicon carbide in a process called sintering.

The silicon carbide is then deposited onto a diamond seed crystal to form a diamond seed.

Characteristics of CVD Diamonds

  • Strong and Reliable  
  • Heat resistant  
  • Excellent mechanical strength
  • High Clarity Levels
Strong and Reliable

Natural diamonds are very fragile and break easily when subjected to impact from other objects or even just touching each other.

CVD diamonds are stronger because they have fewer impurities than natural stones.

This means that they are also able to withstand more pressure before bowing or breaking.

With a less porous diamond, you can expect to pay less and get more bang for your buck.

Heat Resistant

CVD diamonds are very heat resistant. They can withstand high temperatures without being damaged or deformed.

When you are buying a diamond, you should always get a certificate from a reputable jeweler.

A Certificate of Diamond Quality (CVD) is a certification that shows that the diamond you are buying has been tested for durability to extreme temperatures.

Excellent Mechanical Strength

CVD diamonds are made of the same material as traditional diamonds, carbon.

Carbon is one of the most common elements found on Earth. It comes with excellent properties that make materials stronger, tougher, and more durable than other materials.

This is why CVD diamonds have excellent mechanical strength.

High Clarity Levels

When you buy a diamond, you want it to be clear and sparkle. The clarity of a diamond is measured by the sparkle and absence of “haze and cloudiness”.

This is why clarity is a key quality for diamonds. The clarity of a diamond is determined by measuring the “clarity characteristics” of the diamond.

The clarity characteristics are flaws such as “blemishes” and “inclusions” that occur naturally, and inclusions can be classified as either “internal” or “external”.

Differences between CVD  v/s Natural Diamonds

CVD DiamondNatural Diamonds
They have less tension and structural flaws compared to Natural DiamondsThey have more tension and structural flaws compared to CVD Diamonds
CVD diamonds are cheaper compared to Natural DiamondsNatural diamonds are costlier compared to CVD Diamonds
CVD diamonds come in a vast range of creativityNatural diamond’s creativity is limited
They are Environment friendlyNatural Diamonds are less Environmental friendly

Differences between Real Diamonds vs Lab Diamonds

Real DiamondsLab Diamonds
They are naturally found and their origin is in minesLab Diamonds are created by Humans in Laboratory
They are less processed with different patterns according to their absorption and FluorescenceThey are more processed with different patterns according to their absorption and Fluorescence
Real Diamonds are 20% to 30% more costly than Lab DiamondsLab Diamonds are affordable compared to Real Diamonds.
Real Diamonds are not Eco friendly so the method of creation is Limited.Lab Diamonds are Eco friendly so the method of creating is continuous.
The resale value of Real Diamonds is more compared to Lab Diamonds.The resale value of Lab Diamonds is less compared to Real Diamonds.
Real Diamond’s origins are unknownThe origin of Lab Diamonds is traceable.


Q: Are CVD Diamonds Synthetic?

No, they are neither synthetic nor artificial. It is real diamonds produced in Laboratory

Q: What is the Difference between CVD and HPHT?

CVD diamonds are 100% carbon. They are the purest form of diamond whereas HPHT contains impurities so not considered the pure diamond

Q: Do CVD Diamonds impact the Environment and our Society?

No, they don’t harm the environment in any manner.

Q: Is CVD Technology readily available?

The CVD technology is costly and only available to a few people around the Globe.

Q: Do CVD Diamonds change Color over time?

No, CVD diamonds are as equal to Real diamonds and don’t change color or physical appearance.

Q: How long does it take to Produce a Diamond through the CVD process?

The CVD process depends on the size of the process Diamond, It takes generally 3-4 weeks but in the case of the bigger size, it may take 3-12 weeks.

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We hope you enjoyed our blog on CVD Diamonds. Lab-grown diamonds come from volcanic-like rocks, after mine.

We hope you liked our post on the topic. Thank you for reading and please don’t hesitate to share this blog post with anyone you think might find it helpful!

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