Lab Grown Diamond: How is it made?

Finding answers is important because some research says millennials and Gen Z are the potential buyers of lab grown diamonds to show their love for loved ones and nature as these are eco friendly. And it further says nearly 70% of millennials prefer these fancy lab diamonds.
This market insight might be encouraging for a country like India where the youth population is quite high. And today's youth are wired to get into details of things as much as possible.
So, let's get on the process of making now:
When carbon is conditioned in high temperature and high pressure as well as in a controlled environment, it turns out to be a diamond. One more added advantage is, such types of lab grown diamonds don't require any mining andare termed eco-friendly diamonds as well.
Labs usually opt for two major manufacturing methods to perform this.

High Pressure-High Temperature (HPHT) Method
In this process, the very first step to be followed is picking flawless diamond seeds. Because these seeds are the fundamental unit for the carbon that is grown layer by layer over time. Once this is done, technicians put these seeds into lab-created rough diamonds to provide themwith almost similar conditions in which mined ones are made beneath the earth's surface.
Now, with the help of a cubic press, split-sphere press, or a belt press, those seeds are exerted enormous pressure i.e. approximately 1.5 million pounds per square inch. Moreover, there are extreme heat conditions these are put in which is approximately over 2,700 Fahrenheit (1500 0C).
Such extreme pressure and heat conditions tend to melt them and within the due course of time it turns out to be a diamond. Thereafter, it takes time to be cool down under careful supervision.
Chemical Vapor Deposition (CVD) Method