White E F G Color 10 Carat To 20 Carat CVD Lab Grown Diamonds For Making 3 Carat 5 Carat Big Size Cvd Loose Diamond

CVD Lab Grown Diamonds Description

The diamonds grown in the laboratory are also real diamonds. They have the same chemical composition and crystal structure as natural diamonds.

However, the manufacturing process of laboratory-grown diamonds uses advanced technology to simulate the formation conditions of natural diamonds under the earth's crust. This formation process is the main factor that distinguishes natural diamonds from natural diamonds. After all, in terms of chemical, optical and physical properties and crystal structure, diamonds grown in unprocessed laboratories are basically the same as natural diamonds. Between them there may be ice similar to ancient glaciers and ice formed in refrigerators. Although the place and conditions of formation are different, the essence is the same.
In the laboratory, there are two main processes for the manufacture of lab grown rough diamonds.

1. High pressure and high temperature (HPHT)

Using this method to make rough laboratory-grown diamonds, the laboratory simulates the high temperature and pressure conditions of natural diamonds when they are formed underground. HPHT diamonds are manufactured at a pressure of 5-6 GPA (approximately the pressure produced by a commercial jet landing on a human fingertip) and a temperature of 1300-1600°C.
Low-quality natural diamonds and unprocessed natural diamonds can be processed through the HPHT process to improve color and clarity. In addition to increasing the color grade of colorless diamonds, this process can also be used to change the color of the diamond to pink, blue, or yellow.

2. Chemical Vapor Deposition (CVD)
Using this relatively new technology, scientists are able to manufacture synthetic diamonds at moderate temperatures (700°C to 1300°C) and low pressures. The carbon-containing gas is pumped into the vacuum chamber, deposited on the diamond seed, and crystallized into rough laboratory-grown diamonds. The final size of the diamond depends on the time allowed to grow.

Parameters of CVD Lab Grown Diamonds

CVD Lab Grown Diamonds​ Introduction

​Natural diamonds are created by nature and are the result of high temperature and pressure formed over billions of years. The Rough Lab Grown Diamonds are produced in the laboratory, usually in a few weeks. The chemical difference between the two is same.

So how do you distinguish between Rough Lab Grown Diamonds and natural diamonds?

There is no obvious difference between the Rough Lab Grown Diamonds and natural diamonds. Even professional gemologists need special equipment to identify them. By zooming in, professionals will be able to discern subtle contrasts in diamond inclusions grown and mined in the laboratory.

CVD Lab Grown Diamonds Details