4-15 Carat EFG VVS VS CVD Single Crystal Diamonds For Artificial
Jewellery Material
CVD Rough Diamonds Description
CVD cultivation of diamonds (chemical vapor deposition) is a hot
topic at present. The basic principle is to deposit diamonds in a
vacuum, using the highly thermal decomposition of methane gas to
break down a plasma of carbon atoms. Early development of CVD
technology was to create what are called diamond films, but later
research has shown that diamond crystals can also grow very large
particles of synthetic diamonds.
In theory, diamonds need to be formed under high pressure, but
there is a gas called methane, CH4. Imagine a carbon atom with four
arms, each holding four hydrogen atoms. At high temperatures and in
a vacuum, methane breaks down, the bonds between carbon and
hydrogen atoms break apart, and the carbon atoms bond to each other
and deposit themselves on the seed, forming diamonds. CVD can grow
diamonds at a rate of 0.006mm per hour and produce a diamond coated
with graphite in two days. CVD technology uses vacuum technology,
low pressure technology, but it also needs to be generated in high
temperature environment.
Diamond synthesized by CVD technology can achieve the clarity and
color of high-grade natural diamond, and another advantage is that
compared with HPHT, it can produce larger diamond particles.
Parameters Of Man Made Lab Created Diamonds
| Product Name | Synthetic (Lab created) diamond |
| Technology | CVD |
| Color | EFG |
| Size | 4CT-16CTS |
| Grade | VVS VS |
| Used | Polished Diamond Jewelry (necklace,ring) |
| Application | For Cutting Lab Grown Loose Diamonds |
| Place Of Origin | Zhengzhou, China |
Man Made Lab Created Diamonds Introduction
Artificial diamond is composed of 10 to 30 nm in diameter diamond
crystallization aggregation of crystal diamond, more early
artificial diamond with nitrogen from the air atom into diamond
crystals and light syrup in color, the improved method, after
scientists now the production of synthetic diamond and natural
diamond without any differences in appearance, because of the
different production, The molecular structure of artificial diamond
is not the complete octahedral structure of natural diamond but a
complex structure, which will produce phosphorescence phenomenon.
With the maturity of artificial diamond production technology, its
low cost, and can produce a variety of colors of diamonds and in
the jewelry market.
A very small natural diamond is placed in the center as a seed at
2300℃ at 15 to 18 atmospheres of high temperature and pressure.
Around the seed diamond is a hot metal liquid, and on top of the
metal solution is graphite. In this environment, the carbon atoms
in the graphite will line up from the metal atoms to the diamond
and form a new diamond.
In the past, synthetic diamonds and processing costs are still very
high, especially in the equipment, technology, process and other
aspects of the requirements are still very high, but there is a
small number of synthetic diamonds on the market in the world, but
there is no price advantage. But with the development of
technology, synthetic diamonds are now commercially viable.
Man Made Lab Created Diamonds Details
