When it comes to lab grown diamonds, there are two main methods that have been successful: hpht vs cvd.
The CVD method places a diamond seed in a vacuum chamber and exposes it to carbon-rich gas. This gas is heated to nearly 1500 degrees Fahrenheit and deposited onto the seed, which forms a diamond.
Color
When looking at a lab-grown diamond, you are likely to notice that it is a bit different from its naturally mined counterpart. These man-made diamonds are created using two distinct processes – High Pressure, High Temperature (HPHT) and Chemical Vapor Deposition (CVD).
HPHT growth replicates the way diamonds grow underground by subjecting a small seed in carbon to heat and pressure. This results in a diamond crystal being formed around the seed, which is then cooled.
CVD growth also works in a similar manner by creating a temperature differential between the carbon supply and the diamond seed. However, the plasma that forms in CVD growth causes a milky, oily, or hazy appearance to the diamond.
Despite their differences, both CVD Vs HPHT methods are capable of producing diamonds with every possible color, clarity, and size imaginable from unsellable to stunningly perfect. But the suppliers and labs creating these diamonds are playing tug-of-war behind the scenes; they will say whatever they need to in order to make more money, free up inventory, or meet their customers’ needs.
Clarity
There are two main ways to produce a Lab Grown Diamond. They are HPHT (High Pressure, High Temperature) and CVD (Chemical Vapor Deposition).
In the HPHT process, scientists place a small diamond seed inside a specially designed press chamber which can generate an immense amount of pressure. This is done in conjunction with heat and a metallic flux that serves as a growth agent.
The result of this process is a tiny crystal which grows into a full diamond. The process can take days or weeks depending on the size of the chamber and how many diamond seeds are used to produce a single diamond.
Compared to naturally mined diamonds, man made lab grown diamonds are cheaper, more transparent in their supply chain and can be more sustainable. Moreover, they are also more likely to be of better clarity than natural mined diamonds, especially when grown using the CVD process.
Shape
During the process of lab grown diamonds, there are several different techniques that can be used. The most common method is called HPHT (High Pressure High Temperature).
In the HPHT process, a small diamond seed is placed inside a capsule that has an apparatus capable of generating extremely high pressures. The carbon seed melts in a molten flux that includes metals such as iron, nickel, and cobalt.
The resulting diamond crystals are then cooled and cut to shape. The result is a real diamond that is optically, chemically, and physically identical to a naturally mined diamond.
Unlike natural diamonds, which take billions of years to form, HPHT-grown lab diamonds can be formed in a matter of weeks. This makes them a great option for those looking to get a stunning engagement ring, without the wait!
Price
When it comes to lab-grown diamonds, there are two main methods that are used. These are HPHT and CVD.
The HPHT method was first invented in 1954, and it mimics the natural process of diamond formation. It uses extreme heat and pressure to crystallize carbon into diamonds.
Compared to the cost of a mined diamond, this method is significantly cheaper and can result in a man-made diamond that is almost 40% cheaper than a natural diamond of the same quality.
This is a good option for those on a tight budget. However, you should be aware that these diamonds are still susceptible to a number of impurities, so it’s important to choose a trusted company.
In conclusion
The safest way to tell if you have a lab-grown diamond is by asking for its certificate. Look for the following terms in the certificate:
