3.0-4.0ct VS1-SI2 Full White No Blue No Grey Tinch HPHT Rough Lab
Diamonds For Making Carat Diamonds
HPHT Rough Lab Diamonds Description
The laboratory cultivation of diamonds is the use of high
technology to simulate the environment in which natural diamonds
are formed in the earth's crust, and layer by layer of carbon atoms
to form rough stones. There is no difference between these two
types of diamonds.
Although synthetic diamonds are manufactured in factories, their
chemical and physical properties are very close to natural
diamonds.
In the 1950s, scientists made diamonds in the laboratory for the
first time. However, the diamonds manufactured at that time were
too small to be suitable for jewelry. By the mid-1990s, people
began to make larger gem-quality crystals, and they have continued
to this day. Nowadays, more and more companies are engaged in
synthetic diamond manufacturing business. Many countries and
regions are manufacturing synthetic diamonds for jewelry and
industrial purposes.
In some cases, trained gemologists can identify diamonds
manufactured and processed by chemical vapor deposition (CVD) or
high pressure high temperature (HPHT) by using standard gem testing
equipment. But sometimes, gemologists need to use advanced
scientific instruments to test diamonds in order to complete the
identification.
The traditional diamond manufacturing method is called the high
pressure high temperature (HPHT) method. It uses a device to
simulate the high pressure and high temperature conditions of
natural diamonds when it is formed underground, and uses carbon
materials in the device to produce synthetic diamonds.
A relatively new method called chemical vapor deposition (CVD) is
to inject carbon-containing gas into a vacuum chamber and deposit
its crystals on synthetic diamond seeds. This method requires lower
temperature and lower pressure than the high-pressure
high-temperature method. Both methods are currently very popular
diamond manufacturing methods. The initial equipment cost of using
the chemical vapor precipitation method to manufacture diamonds is
lower than that of the high-pressure and high-temperature method,
but the diamonds manufactured using this method require subsequent
processing to improve the color.
Some people may treat laboratory-made diamonds as imitations, but
this is not right. Real diamond imitations, such as synthetic
zirconia or synthetic moissanite, just look like diamonds, but
their chemical and physical properties are completely different.
Parameters of HPHT Rough Lab Diamonds
| HPHT Rough Lab Diamonds Details |
| Brand Name | Yuda Crystal |
| Name | Rough Lab Grown Diamonds |
| Diamond Color | D-F |
| Diamond Clarity | SI2+ |
| Diamond Carat Weight | 3.0-4.0carat |
| 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) |
HPHT Rough Lab 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 | $$$$$ | $$$ |
HPHT Rough Lab Diamonds Details
