All About CVD Diamonds
What are CVD diamonds?
Chemical Vapour Deposition or more familiar CVD is the term associated with synthesized or Lab grown diamonds that are cultivated or manufactured in labs using intricate technological processes. While the process is Chemical Vapour Deposition, the diamonds manufactured through this procedure are known as CVD diamonds. CVD diamonds are indistinguishable to natural diamonds because of their much similar physical properties and chemical composition.
What led to the emergence of CVD?
Natural diamonds derived from the earth’s mantle are formed while undergoing complex geological processes that span to a billion years, making natural or mined diamonds extremely expensive and unreasonable to ordinary people. Thus, the need for man-made diamonds emerged that are relatively inexpensive and are as well capable of providing identical quality, premium look, and magnificent features.
This led to the invention and introduction of the High Pressure High Temperature – HPHT method that enabled humans to synthesize diamonds in laboratories. HPHT diamond created the same way natural diamond crystal formed: high levels of pressure and high grades of temperature. However, this elaborate process requires an abundance of resources that would lead to an environment favourable for the production.
Hence, chemical vapor deposition was devised as a much economical and equally effective alternative.
History of CVD diamonds.
The first Lab made diamond, which was produced by General Electric in 1956, was the HPHT diamond. But in 1954, precisely before the HPHT diamonds announcement, a patent was present for another growing method of the diamond, which was CVD. But because of some doubt in the CVD diamond report, it was not launched for many years.
In the 1980s, with the advanced high technique and intelligence, scientists discovered the right method of growing gem quality lab diamonds through the CVD method.
However, CVD diamonds are not created the exact way a natural diamond is formed. It produced diamonds from a heated mixture of gases at low pressures. In ordinary situations, a combination of heated gases at low-pressure form graphite or other rock minerals. But in the CVD growth chamber, this process result is a beautiful CVD diamond.
What is the process of Chemical Vapor Deposition?
In CVD diamond, this process is relatively slow compared to other laboratory diamond growing processes, as the molecules move at a speed of around 0.1-10 microns attaching itself and form a diamond film in almost an hour. Due to this method’s slow processing, mimicking or copying the authentic and natural way of diamond formation is hectic. Accordingly, it takes 4 weeks to grow a single crystal diamond using a diamond seed.
In CVD of diamond,
- A fragile “seed” is placed in a sealed chamber. The seed is often composed of deposit materials of carbon, fluorocarbons, silicon, filaments, etc.
- The seed is then subjected to high temperatures estimated around 800 degree Celsius.
- A carbon-rich gas, usually a combination of hydrogen and methane gases, is introduced inside the chamber. Here the carbon particles get ionized and undergo a molecular breakdown, and only the pure carbon particles settle on the diamond seed.
- As the carbon particles keep combining and building up, a larger pure carbon component is formed. This newly formed component is identical to a naturally mined diamond in physical, chemical and
This process is relatively slow compared to other laboratory diamond growing processes, as the molecules move at a speed of around 0.1-10 microns attaching itself and form a diamond film in almost an hour.Due to the slow processing of this method, mimicking or copying the authentic and natural way of diamond formation is hectic. Accordingly, it takes 4 weeks to grow a single crystal diamond using a diamond seed.
Benefits of CVD diamonds
Natural diamonds are rare and adorable, but what if you get better than rare at your price? Yes, you read it right BETTER than natural diamond.
There are many aspects where CVD diamonds are better than natural diamonds like purity, price, and environmental effect.
- Only 2% of mined diamonds are considered as the purest diamond with no inclusion and dirt, but all CVD diamonds are IIA type, which means they have no impurities.
- Don’t ever think that high-price leads to better things because sometimes the best of the diamonds comes with the least price. That’s what happens with CVD diamonds; they cost ¼ times lesser than natural diamonds.
- Are you guessing that natural diamonds whose name itself includes “NATURE” will never harm the environment? Then maybe you are misguided. CVD diamonds are eco friendly while mined diamonds are not.
By this, you may get the interest to know more about the price of CVD diamond. That’s what our next topic explained.
CVD diamonds vs Natural Diamonds: Are CVD Diamonds similar to real diamonds?
There are not many distinguishing factors between a diamond made using chemical vapor deposition compared to diamonds obtained from beneath the earth’s surface. The only significant difference between a CVD diamond and a naturally occurring diamond is that a CVD diamond is man-made in the Laboratory by experts.
CVD diamonds are cultivated and grown in labs under the same conditions and temperatures and also follow a similar formation process as that of natural diamonds. However, a natural diamond has to be extracted and obtained in its pure structure formed in the earth’s mantle.
To take a note regarding the chemical structure, atomic structure, physical structure, and the overall outlook, appearance, glitter, and shine, both CVD, as well as natural diamonds, are identical and similar. Both CVD and natural diamonds are so indistinguishable that even jewelers cannot state the difference with an unaided eye and hence require viewing the diamonds under microscopic equipment. CVD diamonds are diamonds in a true sense, holding real value for their possession. CVD diamond is not any other lab-grown imitation or artificial pieces of stones.
The difference between a laboratory grown diamond and a mined real diamond is minuscule, so much so that the gem testing and grading institute GIA has introduced an updated and more advanced instrument that detects the difference between a lab grown diamond a natural diamond.
Are all Lab Grown diamonds CVD Diamonds?
Diamonds that are grown in laboratories are synthesized using a variety of techniques. CVD or Chemical Vapor Deposition is ONE of the ways through which laboratories manufacture diamonds. Traditionally, HPTP was the method through which researchers found that diamonds could be synthesized.
CVD is comparatively a new method that evolved in the decades following the 1980s. Since then, it has been a relatively popular way of manufacturing laboratory diamonds to avoid exhaustive resources and rigorous machinery. For these reasons, even though CVD consumes an elaborate procedure followed by a huge time span, it still is better preferred by Lab Diamonds companies, Finegrown Diamonds itself included.
Other methods apart from HPHT process and CVD are fairly new to the diamond industry and almost less used by any manufacturing unit.
CVD lab diamonds VS other Imitations: Are CVD Diamonds similar to artificial diamonds?
CVD diamonds are synthesized in laboratories manually using the process of chemical vapor deposition. Much other CVD synthetics diamond is man-made; however, they cannot be termed as CVD Diamonds. This is because CVD diamonds require a particular process for their manufacture. They are also formed under specified temperature and controlled conditions, giving them an actual value and thermal conductivity similar to the value of naturally occurring diamonds.
On the other hand, artificial diamond crystal is not composed of the same element: pure carbon-for example, Cubic Zirconia or moissanite. Apart from a difference in chemical composition itself, these artificial diamonds are neither manufactured under similar controlled conditions nor using the processes that are involved in a CVD diamond. Therefore, all simulated diamonds are not similar to CVD lab created diamond in any way and are simply imitations of diamonds.
What is Cubic Zirconia diamond?
There are various kinds of artificial diamonds or diamond simulants available in the market that are commercially used to make jewelry. One such artificial diamond is Cubic Zirconia, which is intended to ‘appear’ like a diamond only by its look.
However, Cubic Zirconia is mainly composed of zirconium. It, thus, lacks all the major physical and chemical properties of a diamond, like the appearance, brilliance, sparkle, shine, or structure of mined diamonds.
Cubic Zirconia is starkly different from a CVD diamond, as lab grown diamonds are made out of pure crystalline carbon components, which is the key element that leads to the formation of natural diamonds. A CVD diamond has all the physical and chemical properties that a natural diamond possesses, unlike Cubic Zirconia.
The authenticity of CVD diamonds
CVD diamonds are man-made in laboratories under controlled conditions and temperatures. Hence, it is often assumed that they would turn out to be looking flawless, devoid of inclusions and picture-perfect. However, that is not the case.
Since CVD diamonds require the same production process as one involved in the formation of natural diamonds, all CVD diamonds are not perfect in appearance and structure. The lab growing diamond also have certain imperfections similar to those found in natural diamonds. On the brighter side, this makes them more
similar to natural diamonds. The inclusions in a diamond are natural and, preferably, make each diamond different from its counterparts.
After CVD lab diamonds have been manufactured in the Laboratory, they undergo the same cutting and polishing process as followed for natural diamonds. Their imperfections are removed or reduced to the nearest possible extent. If the imperfection is on the table or edges, it can easily be removed, but if the flaw is inside, then it is inclusive of the diamond.
The clarity, cut, color, and carat of the CVD diamond is measured and properly certified by professionally qualified diamond certification laboratories like IGI, GIA, AGS to protect the diamond’s authenticity, keeping its real value intact.
CVD Diamonds Price
The price of CVD Diamonds is relatively low to that of a mined diamonds. The reason is not so straightforward, natural diamonds are mined, and it’s associated with huge mining cost and hence exceedingly pricey; only one of the reasons. To extract a single diamond from the depths of the earth’s mantle requires a load of human and material resources. This not only exhausts the resources but also lead to a huge ecological loss. On the other hand, CVD diamonds are produced with the help of technology and pure carbon atoms devoiding chemical impurities. (carbon is an element present in everything in and around us).
There is almost a 10%-40% price difference between lab grown and their natural counterparts, diamonds of the same grade. To know more about the price of CVD diamonds, check our online store for CVD diamonds.
CVD diamonds are thus, not only eco-friendly and sustainable but also economical. Switching to CVD diamonds is a wise decision and a step towards a changed attitude concerning our planet and its sustainable future.
Future of CVD diamonds
Many celebrities like Meghan Markle, Emma Watson, and Leonardo DiCaprio have promoted the use of lab grown diamonds by adding them to their elaborate collections and even endorsing lab grown diamonds. Lab grown diamonds are becoming a greater trend among the young generation, both as a more economical alternative and carrying the great message of sustainability and collective human responsibility in preserving the earth and its ecosystems.
Future of man made diamond is also the future we as humans will choose. With limited resources and massive exhaustion of the existing resources, it is our call if we want to change this approach and lead one step ahead as a generation in acknowledging the greater responsibility towards our upcoming posterity.
How to care for CVD Diamonds?
Since diamonds are one of the most durable substances on earth, that doesn’t mean they do not need maintenance. Diamond and diamond jewelry do require some care and cleaning to sustain its quality and spark.
- Where you put a diamond, is most important. Always keep your CVD diamond in a given box or ziplock bag to keep it safe from any unpredictable accident.
- Periodic professional cleaning can make your diamond shine more.
- Try not to use the ultrasonic cleaner as much as possible, as it will harm the metal of your jewelry hence chances of losing your diamond will increase.
- Always remove your jewelry before going for any heavy household cleaning or sports activities.
- Wear your jewelry after applying your skin product to keep your jewelry safe from any external chemical.
From where should you buy your CVD Diamonds?
Buying diamonds from an entrusted company is important. With this, you will get the assurance of the quality of your diamond and also avail about its ethical source. If the company is providing certification, then you will get consent that the quality is worthy of its price.
An online platform is best for buying diamonds and diamond jewelry. Manufacturer can directly sell their diamonds to the customers. And ordinary people get relief from paying extra to the double-dealing and mid-man.
Why should you buy from us?
Finegrown diamonds provide the best service and assure you get the best deal available and expert advice for lifetime because with 30 days return policy without any questions. We have a smooth payment method, fast delivery, 24/7 on service, and flexible according to your needs.
Finegrown diamonds provides only qualitative diamonds with certification and makes sure you get an appropriate discount on every purchase.
18 Frequently Asked Questions(FAQ) About CVD Diamonds
Yes, CVD diamonds are grown with conditions similar to the formation of the mined diamond under the earth. Hence, we cannot say CVD diamond synthetic or artificial.
Completely not, they both are different from each other. CVD diamonds hold elements like carbon atoms that make CVD diamond durable and similar to real diamonds, not with the CZ, which does not contain any carbon and is comparatively weaker than CVD diamonds.
Beside their origin, nothing is different between natural and CVD diamonds. By physical, optical, chemical, or thermal CVD diamonds are the same as natural diamonds. Also, CVD is the purest type of diamond, as it is also called IIa diamond.
All diamonds are classified into two types II and IIa. II are the types of diamonds that hold some impurities in them, and IIa are the types that include diamonds considered as no impurities or inclusion in them. Even in natural diamonds, only 1-2 % of diamonds come in IIa types. But all CVD diamonds are IIa diamonds because of their controlled method process of growing.
Our scientists have researched for many years how diamonds are created deep in the earth. As a result, we get the secret of the diamond making process. And now, we can grow diamonds in laboratories through two methods known as CVD (Chemical Vapor Deposition) and HPHT (High-Temperature High Pressure) in just three weeks.
HPHT diamonds are high in price, and the resulting diamonds of HPHT are yellowish and brownish because of their high pressure and high-temperature method. On the other hand, CVD diamonds are comparatively less in price and good quality as it needs small and inexpensive equipment.
In CVD, a thin seed diamond is placed under a sealed chamber, and a blanket of carbon-rich gases are spread at a controlled temperature.
While in HPHT, carbon seed is processed through extreme heat and pressure by which a rough diamond is created.
The process of growing a CVD diamond is unique. In this process, a seed of diamond is placed under a closed plasma chamber with a high temperature of 800 °C. Then in the container, rich-carbon gases are released. The gases are ionized and start discharging their molecular bonds, which let the pure carbon tie-up with the diamond seed. With time carbon takes its shape by making an atomic carbon bond. By this, the thin diamond seed became a real diamond.
CVD diamonds are grown in a laboratory with less equipment and supplements. While in natural diamonds, the process of mining and transportation takes many costs comparatively. Hence, the CVD diamonds are more affordable than natural diamonds.
Alike natural diamonds CVD diamonds also have inclusions that affect its grading.
Grading of CVD diamond depends on its 4 C’s; color, carat, clarity, and cut. Same as natural diamond CVD diamonds also provides a certificate of grading.
Yes, All lab-grown diamonds are graded by reputable non-profit gemological laboratories, like IGI, GCAL, GIA, and EGL.
Yes, All lab-grown diamonds are graded by reputable non-profit gemological laboratories, like IGI, GCAL, GIA, and EGL.
Shifting to CVD diamonds from natural diamonds brings many positive impacts to our environment as CVD diamonds are way more eco-friendly than natural diamonds. CVD holds many benefits; some of them are Ethical, social, and conflict-free.
NO, CVD or lab-grown diamond never fades its color or become cloudy with time as it holds the same elements as mine diamonds.
It mostly takes 3-4 weeks to grow a diamond in a lab by the CVD process. But, it also depends on the size of the diamond.
By naked eyes, it is IMPOSSIBLE. CVD diamonds are too similar to natural diamonds that even the experts in diamond fields get sometimes confused about which one is real. By which GIA specially launched a hi-tech machine which detects the lab-created diamonds.
Online is an efficient place for buying a CVD diamond as direct manufacture can reach you, and you will get the best quality diamond at the cheapest price for CVD diamond.
As we get a brief knowledge of CVD diamonds, now we try to solve some common questions that we always get from our customers. By considering that this same question is coming in your mind about CVD diamonds. And if your question is still not in our FAQ section, you can contact us . We are there for you 24/7.