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Why Should I Choose CVD Diamonds Over Others?

Why Should I Choose CVD Diamonds Over Others?

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CVD diamonds are not just synthetic diamonds. They are much more. The immense capability of CVD diamonds to light up your eyes and mind the moment you lay eyes on them is just one way of describing their specialty. 

CVD diamonds in India are very popular in the world in terms of their quality and purity.

This incredible invention of man has a lot under its umbrella. The benefits they have over natural and other artificial diamonds are numerous. And this blog is going to tell you what these advantages are.

They are the purest form of diamonds.

CVD or Chemical Vapor Deposition is a method in which a thin diamond seed is put inside a chamber which is later filled with a carbon-rich gas. At high temperatures, a microwave beam passes through the gas disintegrating its molecules. 

The molecules then coat the diamond seed, making the diamond seed grow in size. This process is called crystallization. In a few weeks, the formation will be completed. When it’s finished, the diamond is taken out in its raw form.

Lab grown diamond manufacturers have constantly experimented with the method of production of CVD diamonds. 

In the past few decades, they began to use Type 1 diamond seeds to improve the color of the diamond that is produced.

Type 2 is the purest form of diamond in the world. Hence, something that develops from the seed of the same will be pure as well. This makes CVD diamonds more special than HPHT lab grown diamonds.

In fact, there are lab grown diamond manufacturers who claim that their CVD diamonds come in the same league as Koh-I-Noor.

They are flawless than their counterparts.

The process is simple and does not carry the diamond seed through different difficult stages like natural diamonds. Once placed inside the chamber it stays there when crystallization happens. 

The diamond takes birth in a pretty safe environment without even moving an inch. Unlike natural diamonds that travel distances before reaching the human hands, CVD diamonds are made with ultra care.

And what does this imply?

They have a minimal set of strains, impurities, and inclusions; that they are one of the purest gems you can find. 

They are whiter and brighter than other diamonds.

As strains or marks on them are very few, the reflection of light will be unhindered. The path of light from the outside to inside and back will be perfect and the shine will make you feel overwhelmed.

They are whiter and brighter than natural diamonds and HPHT lab grown diamonds, making them the best choice for adorning an engagement ring!

They are produced with inexpensive equipment and therefore cost less.

This is an advantage for the lab grown diamond manufacturers. You can imagine how sophisticated a machine should be to recreate something in a few weeks that is naturally formed taking decades. 

The equipment and the procedure might therefore incur a pretty high cost for the manufacture. But when compared to HPHT lab grown diamonds, CVD diamond manufacturing requires a less intensive environment.

The temperature and pressure for CVD diamond production are comparatively less. The machines used are not expensive as compared to the ones used for HPHT lab grown diamonds.

Lab grown diamond suppliers and lab grown diamonds wholesalers thus find CVD diamond manufacturing more preferable.

This gets reflected in the market price rendering them almost 30-50% less priced than their natural counterparts. 

You, as a buyer are therefore getting immensely lucky here!

They come in a range of shades.

By default, CVD diamonds take a brownish hue. But with improvements in technology and innovations made, the brownish tinge is prevented giving colorless crystals. 

Colorless CVD diamonds are suitable to adorn rings or other pieces of jewelry due to their extraordinary aura.

But CVD diamonds give you even more incredible options. 

By supplying boron or nitrogen into the chamber, the colorless CVD diamonds can be transformed into blue or yellow ones.

Blue diamonds whether mined or not make beautiful adornments in jewelry pieces. But the mined ones are highly-priced as they are extremely rare. 

CVD diamonds are therefore better substitutes to natural colored diamonds. They cost less yet give you a wide variety of options.


CVD diamonds are beneficial in many ways. They give you better than what you are looking for at affordable rates. To know how pure and satisfying, they are, you need to see and explore them in person. We are ready to help you with that. Our amazing collection of CVD diamonds is waiting for you here. All you have to do is request a call and we will get in touch with you today!

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What Makes CVD Diamond A Better Choice Than Others?

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CVD diamonds are a type of synthetic diamond. Introduced as a much cheaper method of production than HPHT, which was the first method invented to produce man-made diamonds, the process is considered to be the most reliable method to produce synthetic diamonds today.

What are CVD diamonds?

CVD stands for Chemical Vapour Disposition. Unlike the HPHT method of making diamonds, CVD makes use of equipment that is less sophisticated rendering their cost of production less. For lab grown diamond manufacturers, this is a major reason why CVD diamonds are becoming increasingly preferable over others, even HPHT.

A diamond seed travels through the following steps before it becomes a complete CVD diamond:

  1. The diamond seed is placed inside a vacuum chamber.
  2. The temperature inside the chamber is increased up to more than 800 degrees Celsius.
  3. A carbon rich gas usually methane is then used to fill the chamber.
  4. With the effect of the high temperature, the gas gets ionized and the carbon particles break into fragments coating the diamond seed making it grow in size.
  5. This process will continue for a minimum of 2 to 4 weeks for the diamond to reach its final form.

Are CVD diamonds real diamonds?

Yes, CVD diamonds are real diamonds. They are the same as naturally derived diamonds. CVD diamonds only differ from mined diamonds in how they take origin.

When a natural diamond takes billion of years to reach its final stage, the same is achieved by a CVD diamond within a few weeks. But that does not mean they are less in quality, brilliance, or shine. They have the exact same chemical, physical and optical properties as that of a mined diamond.

Due to their similar characteristics, it is difficult to tell them apart from mined diamonds without the aid of experts and devices that can determine the minute attributes of the gems.

Are they purer than natural diamonds?

According to the CVD Diamond manufacturers in India, these gem-quality stones are crafted with care and craftsmanship that make them flawless and to a large extent free from inclusions or other marks.

Inclusions are the marks that mined diamonds develop in the process of origination. They are therefore the signatures left behind by the nature on these stones. Similarly, man-made diamonds also come with such flaws. But, here the intensity would be less.

A controlled atmosphere set up to reproduce the natural conditions that give birth to mined diamonds is apt for making gem-quality stones with minimal inclusions or flaws. From the temperature to the constituents that come into play, everything is done as specified on paper. Therefore, CVD diamonds are one of the perfect groups of diamonds you can find on the planet.

So, do they shine better?

Yes! It is not wrong to say that CVD diamonds shine better than their natural counterparts. However, generalizing the statement might be wrong. The minimal presence of inclusions or other similar attributes means a better pathway for the reflected rays of light resulting in the brilliance that can mesmerize the eyes of the beholder.

Diamonds are classified into different categories. Type II diamonds are the ones that are tested to be the purest among all. These categories are found both in natural and man-made diamonds. And CVD diamonds are no exception. If lucky enough, the CVD diamond manufacturer you approach might have a good collection of these exceptional gems.

But, CVD diamonds environment-friendly?

Oh, they are very much so! CVD diamond manufacturers in India and around the world are contributing to the well-being of mankind through the creation of these gem-quality beauties.

Mining has a lot of negative impacts– deforestation, landslides, chemicals that affect the soil, exploitation of human labor.

CVD diamond suppliers or manufacturers are providing you with products that are guilt-free. CVD diamonds are made in secure laboratories, far from the bosom of nature, where no human is forced to do vicious activities, no animals harmed nor their habitats destroyed. Hence, when you buy a CVD diamond, you are taking the better path. A path to conservation.

To wrap up

Going to buy CVD diamonds in India is like going to the field and plucking apples right from the trees -fresh and raw. Being one of the major lab-grown diamond manufacturers in the world, India has an amazing collection of CVD diamonds that are always in demand across the world. Make sure to approach the right diamond manufacturer who is can give you the guarantee that you are buying a real valuable CVD diamond.

Want to own some of the best quality CVD diamonds you can find? Do check out our collection here at Rahi Impex today!

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An Ethical Wonder Called Lab Grown Diamond

An Ethical Wonder Called Lab Grown Diamond

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The world is looking for ways to reduce the harm that humans put on nature and many marvel discoveries have helped to achieve the same. Lab created diamond is one among them. Astonishing as they are to look at, these gem-quality stones are one of the greenest products you can find today.

Lab-created diamonds are ethical in numerous ways. They are made in laboratories, in safe environments, and do not involve human labor in any stage of their development. Moreover, the energy involved in their making is less compared to the same used in the excavation of natural diamonds. Similarly, there are many positives to lab grown diamonds that are making them the new face of luxury.

Birthplace: Machines

Well….duh! They are made in laboratories. Who does not know that? But that is not just it. These stones are the products of strict calculations made with the help of machines developed to duplicate the same atmosphere that gives birth to diamonds deep inside the Earth. Hence, lab grown diamond manufacturers are recreating a natural phenomenon inside four walls, within sophisticated machines.

Nature, therefore, is not a part of the origin of synthetic diamonds. If you go to buy lab grown diamonds anywhere in the world you can be sure that you are not taking anything that was commodified after being cut from nature’s womb. 

Origin: Guilt-free

They are not excavated from the layers of the Earth like natural diamonds. And this makes them guilt-free. Humans are not a part of the procedure. Laborers are not getting into mines, digging the soil in dangerous situations that leave their life miserable in different ways. Mine accidents claim numerous lives every year. Moreover, tackling child labor as a part of mining activities took years of effort yet persists in some corners of the world.

Lab grown diamond manufacturers are not involved in such situations during the process of development of these gem-quality stones. Once the diamond seed is placed, the rest of the procedure completely happens inside the contraption. 

Nature: Eco-friendly

Natural diamonds demand a lot of energy for their excavation. Tonnes of earth are removed in order to reach the layer that has a small number of diamonds. And for the process, a huge amount of energy is consumed. The machinery involved is huge and fossil fuels are rapidly consumed for mining and excavations of diamonds.

Moreover, the deep cavities that mining creates on the Earth surface lead to immense negative impacts on nature. Ecosystems and animals are disturbed due to deforestation and natural calamities like landslides and floods are the results in the long term. 

In addition to this, certain chemicals are left behind after mining that affects the rocks and soil called acid rock drainage. This is highly harmful to the nature.

Lab created diamonds are helping to reduce all these. Lab grown diamond wholesalers or lab grown diamond suppliers are just transporting the diamonds from the laboratories to the customers. No harm is being done anywhere in the supply chain, unlike the rigorous activities that bring the natural diamonds that travel a long journey to reach their final destinations.

To Wrap Up

If you go to buy lab created diamonds anywhere in India, you will get to see varieties in shapes, colors, and sizes. Innovations are being done on the stones for the potential to take over the fashion industry is very high. Given the ethical benefits such as the ones mentioned in the blog, choosing lab created diamonds over natural ones is one of the most practical decisions you can make in your lifetime.

At Rahi Impex, you can find the best collection of lab created diamonds made from top-quality diamond seeds selected by the best diamond experts out there.

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Reasons to choose a lab grown diamond

Reasons To Choose A Lab Grown Diamond

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Aren’t they the perfect gems? Lab grown diamonds are quite the beauties to look at. They are shiny, flawless, and have the same aura as natural diamonds. But, have you thought about the actual reasons as to why these diamonds are becoming popular by the day. If you don’t, then this blog can help!

Lab grown diamonds are chosen over natural diamonds due to their environment-friendly method of production. Moreover, the making of the gems is cost-friendly and does not involve years, unlike natural diamonds. Apart from these reasons, there are a few other factors to choose a lab grown diamond over a mined one.

They are eco-friendly!

Artificial diamonds are eco-friendly. They do not harm nature in the course of their production. Lab-grown diamond manufacturers follow strict measures and ensure that the process does not leave any bad mark on the environment.

Environmental impacts of diamond mining such as soil erosion, deforestation, destruction of habitats and ecosystems that lasts for years can be avoided with lab grown diamonds.

The amount of mineral waste that is left behind by mined diamonds is quite huge. This can affect the environment badly and remain in the soil for a long time. As opposed to a 1 ct natural diamond that leaves approximately 2500 kg of mineral waste, the same carat lab grown diamond leaves only around 500 kg of the same.

Comes with no guilt!

Yes, that is right. Lab grown diamonds are guilt-free. As mining is not a part of the manufacturing, lab grown diamonds do not involve a lot of risks that are included in the production of natural diamonds.

Human labour exploitation and child labour are never a part of lab grown diamond manufacturing. As the process is completely machine-oriented, the question of the involvement of human hands does not arise.

Moreover, the easy manufacturing procedure means less time for development from the seed to the final form. Since they are made within a few months they easily cater to the demand frequency in the diamond market.

Save a lot of energy!

Lab grown diamond manufacturers ensure that the manufacturing happens with minimal effort. Moreover, they try to keep the cost of production as low as possible.

The utilization of resources such as water and energy for lab grown diamond manufacturing is significantly less when compared to natural diamond polishing.

These artificial gems produce 2.5 km of carbon per carat which is 5 percent lesser than natural diamonds. This is so because the diamond seeds used for lab grown diamond production are taken from the mined natural stones.

Also, the production of sulfur oxide, a harmful gas that can affect the respiratory system is not an issue with lab grown diamonds whereas, natural diamond produces 13 kg of sulfur oxide on average.

They are pocket friendly

Due to the added advantages in the making, the lab grown diamond manufacturers set the market price for these gems lesser than that for natural diamonds.

They come at almost 30% lesser cost and can be afforded by those who find natural diamonds to be too expensive. However, the price being low does not compromise the quality in any way. Lab grown diamonds are as authentic as the mined ones.

Hence, when you decide to buy lab grown diamonds, you need not worry too much about the price as these are super budget-friendly gems!

Quality is top-notch!

Even if the price is less, the clarity and cut of a lab grown diamond are no less than a brilliantly cut natural diamond. In fact, these artificial gems are known for their inclusion-free texture.

As the lab grown diamonds are made with exact measurements in a controlled environment, they tend to have a much clearer crystal appearance reflecting light perfectly. In some cases, the lab made gems are much more superior in looks and give out a much better aura than natural diamonds.

Therefore, there is a high chance that a lab grown diamond ring might give you better satisfaction than a natural stone-studded one. last

Available in a wide variety

As these are made in labs, they are developed in the way the market needs them. Lab grown diamonds are made in a variety of colors, types, and sizes.

Lab grown diamond manufacturers can easily make diamonds that are similar to rare natural diamonds that can cost you a fortune. For instance, blue natural diamonds are considered to be one of the most precious stones on Earth as they are not easily produced through natural conditions. Lab grown diamonds on the other hand can create a blue diamond that has better qualities than the natural ones without much expense or difficulty.

In terms of sizes and shapes, due to the technology innovation, there is nothing that is impossible in lab grown diamond manufacturing. With each passing year, due to the in-depth studies and experiments that are carried in the field, the lab grown diamond manufacturing has been seeing a lot of significant changes. The years to come are to witness even more!

Lab grown diamonds are therefore the right choice to meet demands that arise either from the business or fashion world.

So where can I get the best lab grown diamond?

Well, you do not have to go far for this! India is a major lab grown diamond manufacturer. The Asian nation is known for the excellent quality lab grown diamonds that are used in various fields.

To buy lab grown diamonds in India find the best lab grown  diamond manufacturers in the country from various sources and try to get to know the products.

Things you need to keep in mind while finding the perfect lab grown diamond manufacturer:

  • Make sure they provide products that are backed by a guarantee.
  • Ensure that they are not overcharging Compare the rate with the market price of the same product.
  • Try to go through the reviews available about the manufacturer on the internet.
  • If possible, make a visit to the place, engage in conversation, and check the product quality for better conviction.


Lab grown diamonds have numerous reasons that make them the better choice. They are green and give you everything that you look for in a gem. Be it a lab grown diamond ring or pendant, the shine will be flawless making you feel at the top of the world!

We here at Rahi Impex serve only the top quality, polished, and cut lab grown diamonds that are considered to be the best in the market. Make sure to visit our page and check out the wide array of awesome products!

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How To Grow A Lab Grown Diamond?

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What are Lab grown diamond?

Synthetic diamonds or lab-grown diamonds are gemstones made in laboratories in a strictly controlled environment. They are considered to be strong competitors of natural diamonds as they have the same physical and chemical properties and are also purer in composition. Although there are misconceptions regarding the credibility of these gems, their beauty, quality, and aura show how they are better than natural diamonds in every way. Today lab grown diamond manufacturers use different methods to create the various types of synthetic diamonds in terms of color, clarity, cut, and carat.

Does growing a lab grown diamond take years like natural diamonds?

Lab grown diamonds do not take years for their formation, rather they are made within a few weeks in laboratories. Developed from diamond seeds, these gems are pure and flawless with better texture when compared to polished natural stones. Since the conducive environment is created manually, the atmosphere needed for formation is achieved within a very short time, thereby making them convenient and easy to be produced.

Why were lab grown diamonds grown in the first place?

The process of synthetically producing diamonds was introduced to the world in the early 1900s. The need for diamonds during the time increased due to the industrial applications that natural diamonds had. When the world was going through a tough time and was devastated due to the effects of world war, the mining of diamonds began to be seriously affected. The decline in the supply of natural diamonds made scientists look for an alternative source.

A General Electric lab in Schenectady, New York became the center of experiments that eventually led to the birth of the first batch of lab grown diamonds in 1954. The group of experts on GE was relieved yet not satisfied. These diamonds were very small. They continued with the experiments trying to polish the method to figure out a much more commercially viable way of producing diamonds. Slowly along with the change in production, the size of the diamond also altered. Bigger ones suiting for jewelry were produced. Thus, today’s factory model of producing diamonds came into existence.

How are man-made diamonds grown?

Lab grown diamonds suppliers use two major methods to produce diamonds. These are HPHT and CVD.

The HPHT method

HPHT stands for High Pressure, High Temperature. The HPHT diamonds are products of a high pressured environment that is created using sophisticated equipment. This was the mechanism developed in the 1950s that produced the first lab grown diamonds. This technique paved way for the other method in the later years. HPHT diamonds are known for their clarity and purity.

The HPHT process is explained below:

Step 1: The best quality diamond seeds are selected by the lab experts first. These seeds form the basis of the diamond to be formed. Hence, they are picked only after scrutiny.

Step 2: The diamond seed is placed inside a small capsule that is equipped with high pressure generating apparatus.

Step 3: The seed is then exposed to high pressure of 1.5 million pounds per unit area and the temperature is set at 1500 degrees Celsius. This results in the carbon being placed inside the capsule to dissolve thereby creating a coating for the seed. The dissolved metal slowly covers the seed with multiple layers. The manufacturers see to it that the temperature and pressure do not go beyond a limit as it can lead to cracks in the diamond.

Step 4: The seed will be placed in the mentioned condition for a few weeks or months. The process is called crystallization. With time the coating increases the size of the seed leading to a raw rough stone.

Step 5: The rough stone when reaches its full form is taken out and subjected to polishing and grinding using machines and tools that are specially crafted to serve the purpose. The procedure needs to be done meticulously. The rough stone thus turns into a beautiful diamond ready to be sold as it is or can be used to adorn jewelry.

HPHT diamonds as they are made in different conditions come out in shapes different from natural diamonds. They have octahedral and cube faces with flat bases. The perfect HPHT diamonds are extremely beautiful and lustrous. Customers who look to buy HPHT diamonds often tend to find the best ones for jewelry purposes.

The CVD method

Similar to HPHT diamonds, CVD diamonds are quite popular in the market. They are one of the purest forms of synthetic gems. Called Low Pressure High Temperature or Chemical Disposition Vapor diamonds, these pretty sparkly stones are the favorites of lab grown diamond wholesalers. They are widely popular around the world especially the Indian Lab grown diamond suppliers who make a huge profit from these.

The CVD process although was developed after HPHT came as a method that is the alternative to it and not the better option.

This method takes the same time to create a diamond. The process is explained below:

Step 1: Like in HPHT, the perfect diamonds seeds are carefully picked from the lot. These seeds are shaped to be flat in nature.

Step 2: The flat diamond seeds plates are placed inside a chamber which is later filled with a carbon-containing gas mostly methane.

Step 3: The temperature inside the chamber is increased converting the gas into its plasma state.

Step 4: A source of energy, a microwave beam is made to pass through the high temperature plasma gas breaking its molecules and making them attract towards the seed plates.

Step 5: The seed plates are coated with the molecules resulting in crystallization. This goes on for weeks till the seed becomes a big rough stone.

Step 6: Once the process is complete the rough stones are taken out and polished to form the perfect synthetic diamond.

CVD diamonds tend to have a flat tabular shape due to the flat diamond seeds used. These gems often take a brownish color and display a greyish edge of graphite. The brown tinge to the diamond can be removed through heat treatment before it is crafted to suit jewelry purposes. To buy a CVD diamond one will have to check the color, clarity, cut and carat to know the quality.

Can lab grown diamonds be identified based on the way they are grown?

Lab grown diamond wholesalers and the clients that buy these stones need to be aware of the nature of the diamonds. As lab grown diamonds exhibit the same chemical and optical properties the texture and shine will be similar to their natural counterparts. Yet, they can be identified when they are in their raw form as rough stones. The shapes that are formed are one way to identify these gems from the natural diamonds.

Even when it is very hard to tell them apart from natural diamonds in their final form, with the right tools it is not impossible. Some of them are:

  • UV Fluorescence Lamp
  • Refractometer
  • Polariscope
  • Binocular Microscope

In addition to these, there is other equipment that is used for proper identification.

Lab grown diamond manufacturers will have a team of gemologists just to look into the characteristics of the diamond and analyze the quality. A clear idea of the same is necessary to successfully run a diamond manufacturing business.

Visual characteristics help gemologists identify the type of synthetic diamond.

Given below are some of such features that help the gem experts to identify the diamond type:

  • Color distribution
  • Kind of strain patterns
  • Inscription on the girdle
  • Metallic Inclusions
  • Presence of phosphorescence
  • Type of fluorescence colors

These are the major ways through which HPHT and CVD diamonds can be distinguished from each other and from natural diamonds. Both the types will have their own nature when it comes to each of the mentioned features. For example, in terms of fluorescence, HPHT diamonds tend to be intensive while the case is not so with CVD diamonds. Similarly, strain patterns are more and diverse in natural diamonds when compared to synthetic diamonds.

Not all features can be used all the time. It might be just a few among these that can be observed in each case.

Lab grown diamond wholesalers and exporters use these methods to create clarity in the terms of production and sale. They ought to have a clear idea as to which diamond is which as it is very easy to get confused between the different types.

As a synthetic diamond is grown using definite measurements and limits, the products are the perfect result with pre-determined characteristics. Cut, clarity, carat, color among other features are all fixed before the process. When a customer goes to buy CVD diamonds or HPHT diamonds, he can demand the lab grow diamond manufacturer the relevant details regarding the diamond to know the product thoroughly.

Lab grown suppliers and manufacturers grade their diamonds from prestigious diamond grading institutions like GIA, IGI, AGS, EGL, etc. These institutions study each diamond and give reports establishing the quality of the gem. Apprehensions of a buyer when he decided to buy HPHT diamonds or CVD diamond can to an extent be resolved if he can get to see the report and understand the details for himself. Most of the lab grown diamond wholesalers and retailers provide the report without the buyer asking for it.

Ongoing research on the methods to grow synthetic diamonds

Studies and research continue to happen in the diamond manufacturing field. With technologies, developing by the day, chances for innovations are immense. New diamonds with better quality and clarity can reach the market anytime. Novel and affordable machines will reduce the cost of production thereby reflecting the same in the market price.

How To Grow A Lab Grown Diamond? Read More »

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