Rectangular Shape 5mm - 7mm DEF Color Rough HPHT Diamond Price Per
Carat
HPHT Lab Grown Diamonds Description
The laboratory-grown 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.
There are two techniques for growing diamond in the laboratory, one
is the high temperature and high pressure method. This method is
the most widely used, but this process will use a catalyst to mix
the diamond with impurities, so most diamonds are used in
industrial fields. The other is chemical vapor deposition. This
method can obtain high-purity diamond without a catalyst.
What is the essential difference between natural diamonds and
cultivated diamonds, mainly in the following points:
1. Formation time
Natural diamonds are formed under high temperature and high
pressure due to geological reasons, and it takes tens of thousands
or even tens of millions of years to produce. Cultivated diamonds
are cultivated in about one to three weeks.
2. Crystal shape
The formation temperature of natural diamonds and laboratory-grown
diamonds is almost the same, but natural diamonds will grow into
octahedral crystals, while lab diamonds can grow into crystals that
contain both octahedrons and cubes.
3. Color
Natural diamonds are colorless, light yellow and other colors. At
present, better quality lab diamonds can also achieve colorless or
light brown, which is almost unrecognizable to the naked eye.
Parameters of HPHT Lab Grown Diamonds
| HPHT Rough Diamonds Details |
| Brand Name | Yuda Crystal |
| Name | HPHT Rough Diamonds |
| Diamond Color | D-F |
| Diamond Clarity | VVS-VS |
| Diamond Carat Weight | 4.0-7.0carat |
| Diamond Cut | Uncut |
| Technology | HPHT |
| Size | Customization |
| Shape | Raw, Rectangular |
| 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 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 | $$$$$ | $$$ |
HPHT Lab Grown Diamonds Details
