SI1 SI2 HPHT Synthetic Rough Diamond 6 Carat 6.5 Carat 7 Carat
Brand Name:YUDA CRYSTAL
Certification:None
Model Number:YD-A+
Minimum Order Quantity:Negotiate
Delivery Time:1-15 Working Days Depends On Quantity
Payment Terms:100% Payment In Advance
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SI1 SI2 Clairty DEF Color 6.0 Carat To 7.0 Carat HPHT Synthetic Rough Diamond For Making Hpht Diamond Rings
Lab Grown Rough Diamonds Description
Synthetic diamond is a kind of imitation of natural mineral, which
is no inferior to the original stone. Is the diamond made in the
laboratory real? Of course, they are! Man made diamonds have no
defects and are cleaner and harder than natural diamonds.
Synthetic diamonds are produced in the laboratory in several ways.
Manufacturing them requires expensive equipment and high-quality
raw materials.
Several technologies are being used to produce laboratory grown
diamonds.
The first method is called HPHT or thermogravimetry (temperature
and pressure). The pressure diamonds produced in this way are
relatively cheap because of the low cost. The bottom line is to
heat (1500 degrees) carbon at high pressure (50000 – 70000
environments) with the help of catalyst metals.
CVD is a chemical vapor deposition method. CVD diamond grown by
this method is used in optical and electronic fields. Hydrocarbon
gas (methane) is deposited on silicon wafer by heating (3100
degrees) or microwave radiation. The film thickness is 2-3 mm.
Explosive fusion. Graphite produces an artificial replica under the
high pressure of an explosive explosion.
Ultrasonic cavitation. Under normal conditions, graphite suspension
was added into organic solvent, and artificial minerals were grown
under ultrasonic cavitation.
High pressure and high temperature
Chemical vapor deposition
At present, the first two methods are the most popular.
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 | SI |
| Diamond Carat Weight | 6.0-7.0 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 - 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) |
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
SI1 SI2 HPHT Synthetic Rough Diamond 6 Carat 6.5 Carat 7 Carat
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