Rectangular Shape VS Plus 7.0 - 8.0 Carat Per Pcs CVD Rough
Diamonds For 2ct Cvd Diamond Ring Making
CVD Rough Diamonds Description
Lab grown diamonds can be made by HPHT(High Pressure and High
Temperature) and CVD(Chemical Vapor Deposition) methods. The apperance of HTHP and CVD rough diamonds are
different. CVD rough diamonds usually are flat plates.
The lab grown diamonds is divided into different levels and
different uses. Industrial grade diamonds are widely used. However,
the production difficulty of gem quality diamonds is very different
from that of industrial grade diamonds.
In the past, gem quality lab grown diamonds contain many
impurities, and they could even be adsorbed by iron absorption
stone. It's very difficult for you to distinguish the gem quality
lab created diamonds by using the iron absorption stone because of
the improvement of the technology. With professional equipment, the
comparison of the color, crystal shape and crystal surface
characteristics, internal inclusion characteristics, absorption
spectrum and ultraviolet fluorescence characteristics of the tested
diamonds can "completely distinguish the artificially cultivated
diamonds from the natural diamonds". After all, natural diamond
crystals were formed billions of years ago, while artificially
cultivated diamonds can only be formed in a few days.
Parameters of CVD Rough Diamonds
| CVD Rough Diamonds Details |
| Brand Name | Yuda Crystal |
| Name | CVD Rough Diamonds |
| Diamond Color | GHI |
| Diamond Clarity | VVS-VS |
| Diamond Carat Weight | 7.0-8.0carat |
| Diamond Cut | Uncut |
| Technology | CVD |
| Size | 5.0-7.0mm |
| 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 Rough 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 Rough Diamonds Details
