VVS-VS-SI Clarity D-E-F Color 7.0-8.0ct HPHT Rough Diamond For
Cutting 2.5ct 3.0ct 4.0ct Lab Diamonds
Lab Grown Rough Diamonds Description
Diamonds produced in laboratories, as the name suggests, are
synthetic diamonds produced in laboratories. It's the only thing
that's different from their naturally occurring counterparts.
Managed under strict guidelines and a highly controlled pressure
environment, authorized creators replicate the exact composition of
natural diamonds. Since the core of diamonds is carbon, the
diamonds made in the laboratory have exactly the same chemical and
physical properties, and there is no monopoly regulation in the
mining industry, so they are cost-effective for consumers.
Diamonds grown in the laboratory are manufactured by advanced
processes such as high pressure high temperature (hPTP) and
chemical vapor deposition (CVD). When using the hPTP creation
method, a small diamond seed is placed in a pure carbon form. The
seeds are then exposed to temperatures above 1500 degrees Celsius
and pressure of about 1.5 million pounds per square inch. The
fusion of the two components forms pure carbon diamond. When CVD is
used, the process is slightly different. A diamond seed is placed
in a heated sealed chamber and exposed to a carbon rich gas. High
temperatures of 800 degrees Celsius combine with the gas, causing
the carbon to crystallize and form diamonds. These processes are
merely replications of the same environment in the earth's core.
Parameters of Lab Grown Rough Diamonds
| HPHT Lab Grown Diamonds Details |
| Brand Name | Yuda Crystal |
| Name | Rough Lab Grown Diamonds |
| Diamond Color | D-F |
| Diamond Clarity | VVS-SI |
| Diamond Carat Weight | 7-8 carat |
| Diamond Cut | Uncut |
| Technology | HPHT |
| Size | 5.0-15.0mm |
| Shape | Raw |
| Application | For Cutting Lab Grown Loose Diamonds |
| Place Of Origin | Zhengzhou, China |
| Delivery Time | 1 - 7 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) |
Lab Grown Rough Diamonds Introduction
HPHT is the abbreviation for high temperature and high pressure
treatment, and its purpose is to change or improve the natural body
color of certain types of diamonds to make them more valuable.
In the past, it was called Pegasus diamond and GE POL diamond. The
reason why it is called GE Diamond is because The technology
developed by GE in the United States is a new product exclusively
sold by POL, a subsidiary of Israel's LKI, in 1999.
HPHT technology is to process natural diamonds at high temperature
and high pressure to enhance the color grade of diamonds. In one
move, it can be upgraded to 4-6 levels. However, not every diamond
can be processed by this technology. It must have a J color or
higher, and be free of impurities and high-clarity quality. During
processing, the results cannot be predicted. In other words, it is
not certain what level it can be promoted to.
At the same time, diamonds treated with HPHT may deepen or change
in color to become a colored diamond.
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 | $$$$$ | $$$ |
Lab Grown Rough Diamonds Details
