11.0ct 12.0ct 13.0ct 14.0ct HPHT Lab Grown Diamonds Big Size DEF Color

10.0ct Plus Big Sizes DEF Color HPHT Lab Grown Diamonds for making 3 carat plus HPHT loose diamonds

HPHT Lab Grown Diamonds Description

HPHT synthetic diamonds usually contain metal co-solvent inclusions, which are black and opaque under transmitted light, and appear metallic under reflected light. This is because during the growth of HPHT diamonds, metals used as catalysts sometimes enter the diamond crystals. These co-solvent metal alloys contain elements such as iron, nickel, and cobalt. Therefore, sometimes a magnet can be used to attract synthetic diamonds with larger metal inclusions.
CVD-grown synthetic diamonds do not contain metal inclusions. But they usually contain dark graphite inclusions or other mineral inclusions, which are formed during their unique growth process. Graphite inclusions are different from metal inclusions in that they have no metallic luster.
The CVD process is very different from the formation of natural diamonds. In a vacuum chamber filled with a hot mixture of hydrocarbon gas (usually methane) and hydrogen, extremely low pressure is applied, and diamonds are produced. Under normal circumstances, heating the mixture at such low pressures will produce graphite or some other non-diamond form of carbon. But in the CVD growth chamber, some of the hydrogen is converted into hydrogen atoms, which promotes the formation of diamonds, because diamonds are more stable in this environment. The conversion of hydrogen molecules into hydrogen atoms is accomplished by the application of microwaves, electric discharges or hot wires.

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

Yuda Crystal is one of the world's leading lab grown diamond companies, mainly active in fields: Gem quality lab grown rough(Including HPHT and CVD) diamonds manufacturing and wholesale, lab grown polish diamonds manufacturing and wholesale, Industrial grade HPHT and CVD lab grown diamonds manufacturing and wholesale. We are a key player in the lab grown diamond business with regular clients. Our reputation in the lab grown diamonds market is based on both stable quality and quantity.

We are able to provide our clients with consistent supplies, offering them a full range of product categories in terms of size, quality and quantity.

Our priority at all times is to deploy our considerable resources to deliver consistently towards the success and growth of our clients businesses.

This dedication is rewarded by lasting relationship with our customers and partners based on mutual commitment, trust and integrity.