EFG Color VVS VS SI Clairty CVD Lab Grown Diamonds For Making Good
Color Vvs To Si Cvd Lab Diamonds
CVD Lab Grown Diamonds Description
Lab-grown diamonds are diamonds grown in the laboratory using
equipment that simulate the growth environment of natural diamonds.
HTHP and CVD are the two main methods for making lab grown
diamonds.
HTHP means High temperature and high pressure method which uses
graphite as raw material, introduces suitable metal catalysts, such
as Fe, Co, Ni, Mn, Cr, etc., and can grow diamond at temperatures
above 2000K and tens of thousands of atmospheres. 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.
The second is chemical vapor deposition (CVD), which uses
carbon-rich gas (such as methane) in the vacuum chamber of the
laboratory to produce cultivated diamonds. The production process
of the CVD process is to first decompose the methane gas molecules
into carbon and hydrogen atoms, and then deposit them on the
diamond seed crystals to form square flat cultivated diamond
crystals.
Parameters of CVD Lab Grown Diamonds
| CVD Lab Grown Diamonds Details |
| Brand Name | Yuda Crystal |
| Name | CVD Lab Grown Diamonds |
| Diamond Color | E-G |
| Diamond Clarity | VVS-SI |
| Diamond Carat Weight | 4.0-20.0carat |
| 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 - 7 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
