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Address: ROOM 1524, 15TH FLOOR, NO.56 ZIJINGSHAN ROAD, GUANCHENG DISTRICT, ZHENGZHOU, HENAN, CHINA
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Henan Yuda Crystal Co.,Ltd |
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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 | Uncut |
| Technology | CVD |
| Size | Customization |
| Shape | Raw, Ractangular |
| 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
