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 Details |
| Brand Name | Yuda Crystal |
| Name | CVD Lab Grown Diamonds |
| Diamond Color | D-F |
| Diamond Clarity | VVS-SI |
| Diamond Carat Weight | 10.0-20.0ct |
| Diamond Cut | Round and fancy cut |
| Technology | CVD |
| Size | Customization |
| Shape | Round and fancy cut |
| Application | For Cutting Lab Grown Loose Diamonds |
| Place Of Origin | Zhengzhou, China |
| Delivery Time | 1 - 15 Working Days Base on Order Quantity |
| Payment Terms | 100% Payment In Advance |
| Payment Methods | T/T, PayPal, Western Union, Bank Transfer |
| Shipping way | DHL, FedEx, SF Express, UPS, EMS, TNT etc |
| M.O.Q | Negotiable |
| Diamond Type | Synthetic(lab created) |
| Location | Zhengzhou, China |
| Treatments Applied | None |
| Fire Dispersion | 0.044(Same as Natural Diamond) |
| Brilliance Refraction Index | 2.42(Same as Natural Diamond) |
| Relative Density | 3.52(Same as Natural Diamond) |
| Chemical Composition | Carbon(Same as Natural Diamond) |
| Moh's Hardness | 10(Same as Natural Diamond) |
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.
| The Difference Between Lab Diamond And Natural Diamond |
| Properties | Earth Mined | Lab Created |
| Guaranteed Conflict-Free | No | Yes |
| Hardness (MOHS) | 10 | 10 |
| SP3 Carbon Diamond Bonds (%) | 100% | 100% |
| Internal Crystal Structure | Face-Centered Cubic | Face-Centered Cubic |
| Hardness Comparable | 2.42 | 2.42 |
| Relative Diversity | 3.52 | 3.52 |
| Color Diffusion | 0.044 | 0.044 |
| Color | Various Grades | K to D grades |
| Price | $$$$$ | $$$ |
CVD Lab Grown Diamonds Details
