|
[China]
Trade Verify
Address: ROOM 1524, 15TH FLOOR, NO.56 ZIJINGSHAN ROAD, GUANCHENG DISTRICT, ZHENGZHOU, HENAN, CHINA
Contact name:Pang
Henan Yuda Crystal Co.,Ltd |
|
Verified Suppliers
|
|
|
E-F-G Color VVS To VS Clarity CVD Lab-Created Raw Diamonds For D-E-F Color High Purity Quality Cvd Lab Diamond
CVD Lab Grown Diamonds Description
Laboratory diamonds, known as synthetic diamonds.
There are two ways to create rough lab-grown diamonds. One way is
for scientists to use graphite on a huge machine, which smashes
diamonds with extremely high pressure and high temperatures-just
like when the earth formed natural diamonds. The high pressure high
temperature (HPHT) process turns graphite into diamond. In the
second method CVD, scientists put diamond "seed crystals" into a
chamber filled with ordinary gas. When the gas is heated, they
begin to form a carbon layer on the seed crystals, allowing them to
grow and eventually form rough lab-grown diamonds. Generally
speaking, the color grade of diamonds produced by HPHT is higher
than that by CVD. Chemical vapor deposition (CVD) is a method to
grow diamond from hydrocarbon gas mixture. The flexibility and
simplicity of CVD devices explain the popularity of CVD growth in
laboratory research. The advantages of CVD diamond growth include
the ability to grow diamond on large area and different substrates,
as well as the fine control of chemical impurities and properties
of the diamond.
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-VS |
| Diamond Carat Weight | 8.0-15.0carat |
| Diamond Cut | Uncut |
| Technology | CVD |
| Size | Customization |
| Shape | Raw, Square |
| 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
