FG VS VVS 0.005ct - 0.03ct Per Pcs HPHT Melee Diamonds For Diamond Jewellery

HPHT Melee Diamonds​ Description

Nowadays people can use advanced technology to simulate the formation conditions of natural diamonds under the earth's crust to create lab grown diamonds. This formation process is the main factor that distinguishes lab-created diamonds from mined diamonds. The chemical, optical and physical properties and crystal structure of lab grown rough diamonds are basically the same as natural diamonds. Although the place and conditions of formation are different, the essence is the same.
Lab grown diamonds is usually produced by chemical vapor deposition (CVD) or high pressure high temperature (HPHT) methods.

1. High pressure and high temperature (HPHT)

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 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.

2. Chemical Vapor Deposition (CVD)
Scientists are able to manufacture synthetic diamonds at moderate temperatures (700°C to 1300°C) and low pressures by using CVD technology. 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.

Can we distinguish between laboratory grown diamonds and natural diamonds?
Yes it is. However, only diamond professionals can identify the difference between laboratory grown diamonds and natural diamonds by using professional diamond identification equipment.

Parameters of HPHT CVD Melee Diamonds

HPHT CVD Melee 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 CVD Melee Diamonds Details