Round Square 5mm To 8mm HPHT Synthetic Diamond 8.0ct 8.99ct For Excellent Cut

Round Square Shape 5mm To 8mm HPHT Synthetic Diamond For Making Excellent Cut HPHT Diamond

HPHT Lab Grown Diamonds Description

Laboratory-grown diamonds have many different names-laboratory diamonds, laboratory-made diamonds, laboratory synthetic diamonds, and even synthetic diamonds. These names indicate that cultivated diamonds are artificially created in laboratories or factories, rather than naturally formed or mined from the ground. The laboratory cultivating 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 laboratory diamonds from natural diamonds. After all, the chemical, optical, and physical properties of diamonds grown in the laboratory are exactly the same as natural diamonds.

However, it is difficult to distinguish between cut and polished laboratory-grown diamonds and natural diamonds with the naked eye. Professionals can rely on professional testing equipment to distinguish.

In the laboratory, there are two main processes for the manufacture of lab grown rough diamonds. The first one is the high-pressure high-temperature method (HPHT), The second one is chemical vapor deposition (CVD).
HTHP: High temperature and high pressure method (HTHP) uses graphite as raw material, introduces suitable metal catalysts, such as Fe, Co, Ni, Mn, Cr, etc., and can synthesize diamond at temperatures above 2000K and tens of thousands of atmospheres.

CVD: Chemical Vapor Deposition (CVD) is a method of decomposing raw materials at high temperatures to produce active particles such as carbon atoms or methyl groups, and depositing and growing a diamond film on the substrate (substrate) under certain process conditions Methods.

Parameters of HPHT Lab Grown Diamonds

HPHT 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.

HPHT Lab Grown Diamonds Details