Vs Si Purity 3.0ct - 5.0ct CVD Rough Diamonds For 1 Carat Loose Cvd
Diamond Cutting
CVD Rough Diamonds Description
Lab created diamonds can be made by HPHT and CVD methods.
What CVD stands for?
Chemical vapor deposition (CVD) is a process in which the carbon
containing gas is dissociated and the carbon atoms are deposited on
the substrate to form diamond films.
Diamond crystals grown by CVD are mostly plate-shaped, and
occasionally small octahedral faces and diamond dodecahedral faces
can be seen at the edge. The color of early CVD diamonds is dark
brown or light brown, while recently discovered CVD diamonds have
been proved to be colorless or nearly colorless after high
temperature heat treatment. There are few inclusions in CVD
diamonds, some of which are needle like and black irregular.
However, it can not be used as a basis for distinguishing natural
diamonds from HTHP synthetic diamonds. There is no metal inclusion
in CVD diamond, so it is not magnetic.
Although the laboratory-grown rough diamonds are grown in the
laboratory, they are composed of carbon atoms, have the same
physical properties and chemical composition as natural diamonds,
and have fewer impurities and higher purity than natural diamonds.
And it's cheaper.
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 | 3.0-5.0carat |
| 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
