4pcs 3pcs 2pcs HPHT Rough Diamond 0.2ct 0.6ct Laboratory Made Diamonds

4pcs 3pcs 2pcs HPHT Rough Diamonds For Making Small Sizes Lab Grown Loose Diamonds

HPHT Rough Diamonds Description

How is the diamond production process in the laboratory?

Man-made diamonds do not need to be produced under the conditions of high temperature and pressure inside the earth like natural diamonds, nor do they need extreme events such as volcanic eruptions or meteorites hitting the earth. It grows in a mild environment in a ground laboratory.

Everything starts with the seed. The seed is a small laboratory diamond that can be processed by one of two methods: CVD (chemical vapor deposition) or HPHT (high temperature and high pressure). In chemical vapor deposition (CVD), the seed is placed in a plasma reactor chamber, and then a carbon-rich gas mixture is added to the seed under extremely low pressure. Then microwaves are used to heat the gas and generate plasma. When the temperature rises by several thousand degrees Celsius, the gas molecules decompose and the carbon atoms are combined with the seeds. Its operation process is to put a small piece of diamond as the mother stone ("seed diamond") into the reactor, then fill the reactor with methane, and then turn on electricity. The methane molecules are then ionized, forming a plasma. This plasma contains a large number of carbon atoms, which continuously accumulate on the diamond mother crystal like rain. After layer by layer, artificial diamonds composed of pure carbon atoms are formed.

High pressure and high pressure (HPHT) mimics the formation process of natural diamonds, placing the seeds under great mechanical pressure and exerting great pressure and high temperature on the existing carbon. The seed will quickly turn into a diamond with a carbon lattice and grow layer by layer within a few days until it reaches the desired carat weight.
Its essence is the ordinary crystal growth method, called "chemical vapor deposition method" (referred to as CVD method), the English full name is Chemical Vapor Deposition.

Parameters of HPHT Rough Diamonds

HPHT Rough 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.

HPHT Rough Diamonds Details