CVD Diamonds

Wholesale CVD Diamonds

The History of CVD Diamonds

Do you know when the first commercially available Man-Made Diamond was produced? The first of the man-made Diamonds, also known as Synthetic Diamond or CVD Diamond, was made in 1956 by General Electric with the High Pressure, High Temperature (HPHT) process. The HPHT process growth imitates a Natural Diamond formation, but with carefully selected input materials to catalyze crystal growth. Today, there are billions of carats of Diamonds produced every year by the HPHT process, and mostly for industrial applications. This process of lab-grown diamonds only took place in the 21st century and is really the next generation answer to diamonds, responsibly.

cvd diamonds
CVD diamonds

CVD Diamonds (photo courtesy of

What Are CVD Diamonds?

A CVD or Chemical Vapor Deposition Diamond also referred to as a laboratory-created Diamond, is produced by means of a synthetic method, as compared to real or Natural Diamonds, which are generated by physical processes. In addition, CVD Diamonds started appearing in the gemstone Diamond market many years ago. This process involved bringing a gas like methane into a vacuum chamber and then activating and breaking down the molecules of the gas with microwaves, which causes the carbon atoms to accumulate on a substrate like the way snowflakes accumulate in a snowfall.


There are now mainly two methods of manufacturing CVD Diamonds. The first is the HPHT or High-Pressure High-Temperature process and the other is CVD or Chemical Vapor Deposition. The HPHT method was used to successfully grow diamonds in 1956 by General Electric and basically mimics the natural process. The energy and equipment needed for the HPHT process are costly and produce diamonds with mostly brownish or yellowish colors. On the other hand, using the CVD process is inexpensive because it works at moderate temperatures with a low pressure that needs smaller and less costly tools. Colorless crystals can be grown as the vacuum chamber contains mainly carbon and some hydrogen. Yellow or Blue CVD Diamond crystals can be produced if boron or nitrogen is introduced into the chamber.

Why CVD Diamonds Are Inexpensive

Today, everyone is curious about why CVD Synthetic Diamonds are very low in price. Synthetic Diamonds are about 30%-40% cheaper than normal Diamonds. However, a common question in the Diamond trade and among buyers is whether CVD Synthetics will sooner or later be manufactured so inexpensively that the value of Natural Diamonds is endangered, and the answer to that question is a big “NO”. The growth of CVD will become more efficient because of the scale and manufacturing experience, but many factors will only become more costly with inflation and time.

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Different CVD diamonds cuts

CVD Diamonds in Different Cuts

Firstly the cost of CVD Diamonds cutting and polishing is the same as for natural diamonds and also the highly skilled artisans will still be required to produce beautiful man-made diamonds. Secondly, the electricity needed to produce a one-carat diamond does not scale considerably with the number of or size of chambers needed or the “Diamond Seeds” needed. We know that electricity is a major cost and is only expected to continue rising in the future. Producing seeds is a third cost that is a major overhead and it is not likely that a costly alternative for Diamond Seed will ever be found.

CVD synthetics can be developed in a range of sizes and colors with high clarity. Besides, the gems produced are as durable and eye-catching as natural diamonds. It is vital to note that the GIA has the ability to identify and grade CVD synthetics, which will continue to protect consumers and also the truthfulness of the diamond industry. For people who cannot afford a real diamond the lower prices of CVD Diamonds might be a viable option, particularly if you are considering buying a colored stone. Besides the lower prices buyers of CVD Diamonds can be certain that their purchase is a 100% conflict-free diamond as they originate from a lab.

CVD Color

Both CVD and HPHT Diamonds can be cut into gemstones as well as different colors can be produced. Yellow, brown, green, blue, orange, and clear white are a few of the colors. Usually they are available in yellow, blue, and even white. The blue color is produced from boron while the yellow color comes from nitrogen impurities in the industrialized process. However, other colors like pink and green are feasible after the synthesis through the irradiation process.

CVD DiamondsA Diamond Color Chart (courtesy of

CVD Diamonds Were a Very Popular Item In the HK Gem Show 2015

CVD Diamonds or grown Diamonds were the hot topics of discussion in the Hong Kong Jewellery & Gem Fair. This show is one of Asia’s top three, fine jewelry events. This 29th edition June Fair was happening at Hong Kong Convention & Exhibition Centre from 23 to 26 June 2016. This event was the must-not-miss midyear trading event for gemstone manufacturers, suppliers, and of course wholesale buyers of CVD Diamonds. More than 2,300 exhibitors from 45 countries participated in this mega gemstones event. CVD Diamonds were very high in sales in this June fair in spite of most CVD Diamond sellers not reducing prices because they had a high cost of purchase, which doesn’t make it feasible to cut prices. Also, about 90% of the buyers surveyed and 95% of exhibitors consider Hong Kong’s fairs a major channel to find new suppliers and 80% of exhibitors consider the fairs a major avenue to promote new products.

Although buyers have several CVD retailers to choose from, there is one pioneer in the field currently selling Synthetic or CVD Diamonds for up to 50% less compared to Natural Diamonds in the market. Navneet Gems & Minerals situated in Thailand can be the best source for Wholesale CVD Diamonds. The company is selling Synthetic Diamonds, including colorless for up to 30% less than their mined equivalents.

The Synthetic or CVD and real Diamond markets complement each other will continue to co-exist. Some of the people who want to buy real Diamonds with certification paperwork don’t consider buying lab-generated Diamonds as an acceptable alternative. Additionally, those people who are only willing to pay for their CVD Diamonds at lower prices may not always consider natural Diamonds that could be very costly, although the price is believed a bargain. Besides, fearing the presence of CVD Diamonds, jewelers can play to their benefits instead by providing both synthetic and natural Diamonds for a great range of price points and gaining as a result, a broader customer base.

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