Ractangular Shape GHI Color 7.0-8.0ct CVD Lab Grown Diamonds For
Cutting Oval Shape Cvd Polish Diamonds
CVD Lab Grown Diamonds Description
The gem quality synthetic diamond produced by the CVD (chemical
vapor deposition) method is beautiful in appearance and has almost
the same properties as natural diamonds. Because of their high
purity, these CVD products belong to Type IIa, which constitutes
only a small portion of natural diamonds. Under the advanced
detection technology, any diamond sample using CVD growth method
can be clearly identified.
Under the conditions of CVD, the diamond growth process will
produce easily detectable characteristics, including:
1. Low-pressure, high-energy hydrogen-rich environment
2. Silicon at the growth site
3. Nitrogen remains in the growth part
4. Layers of carbon atoms on the growth surface accumulate
A hydrogen-rich environment can cause defects, called vacancies,
because occasionally carbon atoms will leave the diamond crystal,
creating vacancies. The carbon vacancy next to the silicon atom can
form a silicon vacancy (Si-V) center, which is very rare in nature.
The carbon vacancy adjacent to the nitrogen atom can form a
nitrogen vacancy (N-V) center, which is very rare in nature. The
defects of these two vacancies can be detected by spectroscopic
measurements such as photoluminescence, ultraviolet irradiation and
light absorption. Since diamond has the characteristics of
layer-by-layer formation, and nitrogen is non-uniformly fused
between the layers, growth stripes can be observed.
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 | 7.0-8.0carat |
| 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 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 Lab Grown Diamonds and natural
diamonds?
There is no obvious difference between the 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
