Square Shape 6mm - 8mm EF Color Cvd Hpht Diamond For Making Round
Brilliant Cut Lab Loose Diamonds
Artificial Lab Created Diamonds Description
There are two main processes to make artificial diamond: one is
high pressure and high temperature method (HPHT), the other is
chemical vapor deposition method (CVD).
High temperature and high pressure catalytic technology (HPHT)
simulates the natural environment in which diamonds form 150
kilometers below the earth's surface. At about 2000 degrees Celsius
and 5.8 atmospheres of high temperature and pressure, the crystal
structure of diamonds will be dislocated, or tiny graphite will be
used to make synthetic diamonds. It is mainly made of carbon. The
quality of artificial diamonds is almost the same as that of
natural diamonds.
In theory, diamonds need to be produced under high pressure.
Chemical vapor deposition (CVD) is a method to cultivate diamond by
CVD. The basic principle is that methane decomposes in vacuum at
high temperature and vacuum, carbon atoms and hydrogen atoms are
separated, and carbon atoms are deposited on the seed crystal to
form diamond.
The diamond synthesized by CVD technology can reach the purity and
color of high-grade natural diamond, and can cultivate large grain
diamond better than HPHT.
CVD Artificial Lab Created Diamonds can be used in jewelry industry
and industrial cutting. With the progress of technology, color and
purity are improving, and the output will be larger and larger,
which can provide more choices.
Parameters of HPHT Lab Grown Diamonds
| HPHT Rough Diamonds Details |
| Brand Name | Yuda Crystal |
| Name | HPHT Rough Diamonds |
| Diamond Color | DEF |
| Diamond Clarity | VVS VS |
| Diamond Carat Weight | 3.0-5.0carat |
| Diamond Cut | Uncut |
| Technology | HPHT |
| 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) |
HPHT 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 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 Lab Grown Diamonds Details
