

Gemstone Material:Lab-Grown Diamonds
Gemstone shape: Round Shape
Gemstone cutting: 8 hearts and 8 arrows CUT
Gemstone Color: D color
Gemstone weight: Customizable size
Gemstone Clarity: VS1
Gemstone Polish: EX
Gemstone Symmetry: VG
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There are currently two methods of artificially growing diamonds in the world: high-pressure high-temperature (HPHT) and chemical vapor deposition (CVD).
The principle of HPHT is to completely simulate the natural mechanism of natural diamond growth underground. It generally requires 10GPa and a pressure and temperature of more than 3000℃ to allow the carbon atoms in graphite to recombine into the structure of diamond.
CVD chemical vapor deposition is formed by the deposition of carbon elements produced by methane combustion, which frees carbon atoms in carbon dioxide and reattaches them to diamond slices to make diamonds grow taller.
Both types of diamonds are cultured diamonds, and their composition, properties, and appearance are exactly the same
as mined diamonds. They are both 100% diamonds!
properly |
HPHT |
Chemical Vapor Deposition (CvD) |
natural diamond |
difference |
|
cherical composilion |
Carbon c |
Carbon C |
Carbon C |
none |
|
refaclive index |
2.42 |
2. 42 |
2.42 |
none |
|
relative densily |
3. 52 |
3.52 |
3.52 |
none |
|
dspersion |
0. 044 |
0. 044 |
0.044 |
none |
|
Hardness value |
90 GPA |
90 GPA |
90 GPA |
none |
|
Thermal conductivity |
2 x 103 W/M/K |
2 x 103 W/M/K |
2 x 103 W/M/K |
none |
|
Thermal expansion |
0.8x 10-6 K |
0.8x 10-6 K |
0.8x 10-6 K |
none |
|
Transparency |
DEEP UV TO FAR TR |
DEEP UV TO FAR TR |
DEEP UV TO FAR TR |
none |
|
Resistivity |
1016 OHM-CM |
1016 OHM-CM |
1016 OHM-CM |
none |
|
Compressibility |
8. 3 X 10-13 M2/N |
8. 3 X 10-13 M2/N |
8. 3 X 10-13 M2/N |
none |
Diamonds grown by both HPHT and CVD methods are real diamonds, just like natural diamonds mined from the ground.