Square Shape E F Color VVS VS Clarity 12.0 Carat - 13.0 Carat CVD
Rough Diamonds For Making 4carat Lab Grown Polish Diamond
CVD Rough Diamonds Description
Diamond is known as the hardest material in the world. According to
the Mohs hardness scale, it is divided into 10 grades, and diamond
is the highest grade. From the day when people know that diamond is
composed of pure carbon, there are more and more researches on Lab
Grown Diamonds. Now Lab Grown Diamonds industry has developed
rapidly and is widely used in various industries.
There are two main methods to make lab grown diamonds. One is
called HPHT(High Temperature and High Pressure) and another is
CVD(Chemical Vapor Deposition)method.
High temperature and high pressure synthetic diamond technology
originated in the 1950s, initially mainly used in aviation and
military industry, in the last decade gem grade synthetic diamond
in quality and cost has reached the level of marketization.
HPHT lab grown rough diamonds is produced by simulating the
crystallization process of natural diamonds. When natural diamonds
are formed in natural environment, there are often other elements
mixed in, which makes some natural diamonds not completely
transparent and will show specific colors. For example, some
diamonds have a little pink, some with a little blue, some with a
little bit of light yellow. Lab grown diamonds grow in the
laboratory, which are less impurities than natural diamonds, so the
purity and transparency will be higher.
Parameters of CVD Rough Diamonds
| CVD Rough Diamonds Details |
| Brand Name | Yuda Crystal |
| Name | CVD Rough Diamonds |
| Diamond Color | EF |
| Diamond Clarity | VVS-VS |
| Diamond Carat Weight | 12.0-13.0carat |
| 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 Rough 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 Rough Diamonds Details
