Everything You Need To Know About CVD Diamonds

September 08, 2023 . Bhanderi Lab Grown Diamonds
Everything You Need To Know About CVD Diamonds

CVD Diamonds – What Do You Understand By This?

The full form of CVD is Chemical Vapor Deposition and is generally used to manufacture diamonds grown in the process mentioned above. However, it would be best if you kept in mind that the Carbon Vapor Deposition process is different from HPHT Diamonds (High-Pressure High Temperature).

CVD Diamonds are grown by humans in laboratories but are similar to real diamonds. They are also 100% authentic in quality and appearance. It is unthinkable to differentiate between diamonds grown through the CVD process and naturally extracted diamonds. You can tell them apart by using specialized and advanced machinery.  


Thus, the Carbon Vapor Deposition process is considered one of the most popular diamond-growing processes in laboratories. An individual acquires certain advantages while buying these Diamonds: sustainability, ethical origin, affordable price, and high-quality diamonds. As the popularity of diamonds grew through carbon vapor deposition increased, Bhanderi Lab Grown Diamonds provide one of the most superior qualities of CVD Diamonds.  

What Are The Features Of CVD Diamonds? 

The characteristics of Carbon Vapor Deposition (CVD) diamonds closely resemble those of natural diamonds. CVD diamonds share comparable chemical and physical compositions, internal structures, and captivating beauty with genuine diamonds. Much like their naturally occurring counterparts, these diamonds exhibit exceptional durability, ranking a perfect 10 on the Mohs scale, and they dazzle with intense sparkle and brilliance.

Like real diamonds, diamonds made through carbon vapor deposition are graded on the 4Cs of diamonds – cut, clarity, color, and carat. Despite being created by humans, CVD diamonds possess identical flaws and imperfections as their natural counterparts. They may pick up certain internal flaws and color tints while growing in the laboratories. It is very rare to find CVD Diamonds devoid of flaws and perfect. Certain CVD-grown diamonds may exhibit pronounced coloration or extensive inclusions, whereas others can be colorless with minimal imperfections. This parallels the presence of similar flaws and blemishes in naturally occurring diamonds. Look between VS2 clarity grades and SI1 and D to F color grades; a diamond appears superior in quality and provides a good return for your investment.

Even seasoned gemologists struggle to distinguish between CVD diamonds and natural diamonds. The reason is that these diamonds are real diamonds. CVD contains the same chemical, physical, and optical features. When you buy CVD gems, you will find that GIA or IGI certification specifically states its origin. Besides this, any individual would require advanced equipment to differentiate between CVD and genuine diamonds.

Read More: Certification Of A Lab Grown Diamond: Who Certifies Them?

The Process Of Carbon Vapor Deposition (CVD)    

· A slender diamond seed is carefully chosen and positioned within a sealed chamber.

· The sealed chamber is flooded with carbon-rich gas and is heated to around 800 degrees Celsius.

· The gas undergoes ionization, leading to the transformation into pure carbon.

· The original diamond seed forms connections with pure carbon molecules.

· The growing process continues till a fully formed diamond is achieved.


The process of CVD Diamonds needs a highly advanced, scientific process that has been grown and perfected over many decades. CVD helps to make jewelry-quality gemstones in a relatively speedy and efficient way. The carbon vapor deposition process is scientific and is used to make several solid materials, generally for the semiconductor industry. The CVD process takes around two to four weeks to grow a diamond.

A very fine piece of diamond seed, around 300 microns thick and 10x10mm, called a ‘diamond seed’, is chosen and thoroughly cleaned. It is vital to clean a diamond seed, as any imperfections or blemishes get crystallized during the CVD growing process of the diamond. The crystallization causes the formation of inclusions. The fine slice of the diamond is generally taken from a superior-quality diamond formed by HPHT.  

The superior-quality diamond seed is put inside the sealed chamber and then heated to around 800 degrees Celsius. The sealed chamber is filled with gas rich in carbon. The chamber must be completely closed to prevent any other gas from entering the chamber that will hamper the growth of CVD Diamonds.

The carbon-rich gas goes through the process of ionization in the sealed chamber. The ionization process includes breaking molecular bonds that settle down on the existing diamond seed. The pure molecules of carbon attach themselves to the seed, and the process continues as more carbon-rich gas ionizes and settles down to the existing diamond.

After CVD Diamonds are grown in labs, it has a similar life process to natural diamonds. First, it will be cut according to the desired shape and carefully polished to achieve brilliant sparkle and shine. The gemstone is then graded by GIA, like naturally extracted diamonds, and traded by the jewelers.

How Much Time Does It Require To Grow Diamonds Through CVD?

The speed of diamonds' growth through CVD depends on the size of the stone and the efficiency of the machines used. One can create one carat of these gemstones in less than a month or smaller stones in two weeks. Colored diamonds, such as yellow gemstones, can take five to ten days. Colored gemstones take less time than transparent gemstones because the nitrogen added to form them speeds up the process of crystallization.  

Can You Identify CVD Diamonds?  

You do not have to worry about the appearance of diamonds grown through the carbon vapor deposition process. Any individual, including expert gemologists, can only identify the difference between CVD and real diamonds using specialized technology. Caron Vapor Deposition Diamonds do not appear fake or different from natural diamonds.

Also find out Cvd Diamonds the Newest Diamond Trend in the Market.

When these gemstones are put under magnification, you may be able to detect those diamonds grown through CVD have a different strain pattern than mined diamonds. However, you may need the help of an expert gemologist knowledge to decide what you are looking for, as even top gemologists struggle to see the difference between them. When equipment is used to differentiate between mined diamonds and CVD created diamonds, one tries to look for traces of silicone. The traces of silicone are sometimes picked up during the growing process of CVD created diamonds.   


Grading And Certification Of Diamonds

Like natural diamonds, Lab created diamonds such as CVD are graded based on their 4Cs – cut, color, clarity, and carat. In addition, it is also graded on other details like polish, symmetry, and fluorescence. The grading of the diamonds gives an accurate reading of their authenticity and quality. The determination of the price of the diamond is also done through the help of grading.

GIA also imprints a distinctive code on the girdle of the gemstone. The distinctive code is visible only under magnification which is then printed on the paper, where all the details of the stone, including carat weight, grades, and measurements, are mentioned. At Bhanderi, we provide gems that have been selected and vetted by our top gemologists that will provide you value both in terms of aesthetics and money. Also, we sell only and only GIA-certified diamonds – one of the top grading institutions globally.  

What Is The Cost Of CVD Diamonds?

The price of a natural diamond is much more than diamonds grown through CVD. The only reason behind its cost-effective price is that it takes less than one month to grow a piece of stone. Thus, it does not need any mining cost. Whereas when one talks about natural diamonds, it takes billions of years to form. Mining companies invest a lot of money and time to excavate land, build mines, and employ a large physical labor force. Although the newest CVD diamond needs investment in advanced machinery and a skilled workforce, the total investment is still less than in mining diamonds.

Lab made diamonds such as CVD and HPHT are 40-60% cost-effective than mined diamonds. Nevertheless, they retain their value, authenticity, and genuine nature. Much work and professional skills are needed for growing, cutting, grading, and polishing CVD Diamonds.

Should You Buy Diamonds Grown Through CVD?

Choosing between mined and CVD Diamonds is a personal decision. But it would be best to keep in mind that when you choose CVD, you choose an ecologically sustainable and ethical option. It is also less expensive and will not dent your budget. You are choosing a gemstone that is a product of the wonders of science over something mined out from the earth by depleting the natural resources of the earth.

If you are looking for something within your budget that is still very precious and rare, CVD Diamonds should be your go-to option. They are very durable, high in quality, have long longevity, and have similar physical, chemical, and optical properties to naturally mined diamonds.

latest blogs
  • Lab Diamonds Revolutionary
  • About Bhanderi
  • 4Cs Of Diamond Chart
  • Blogs
  • Sitemap
global head office

Akshar Building, 4th floor, BLGD corporation, opp. Mehta Petrol pump, Katargam-395004, Surat, Gujarat, India

footer icon
Copyright © 2024 BHANDERI LAB GROWN DIAMONDS. All Rights Reserved