Square Shape EFG Color 10mm - 12mm EFG Color Cvd Diamond Lab Grown
For DEF Color Loose Diamond Cutting
CVD Lab Grown Diamonds Description
Laboratory diamonds, also known as lab grown diamonds, man made
diamonds and synthetic diamonds. At present, there are two main
methods to create lab grown diamonds: HPHT(High Temperature and
High Pressure) method and CVD(Chemical Vapor Deposition)method.
Both natural diamond and lab grown diamonds are pure carbon
crystals, and their physical, chemical, crystal structure and
optical properties are same. Due to the different formation
conditions, the nature of natural diamonds and cultivated diamonds
are also different. However, natural diamonds grow into octahedral
crystals (eight equilateral triangular facets), while cultivated
diamonds can grow into both octahedral and cubic crystals (six
square facets).
HPHT stands for High Pressure High Temperature Method, which is a
main method used in laboratories to make diamonds. This diamond
growth process requires carbon to be exposed to extreme temperature
and pressure conditions, which simulate the extreme heat and
pressure conditions when natural diamonds are formed in the depths
of the earth.
High temperature and high pressure synthetic diamond technology
originated in the 1950s, initially mainly used in aviation and
military industry, in the last decade has achieved a qualitative
leap in technology, gem grade synthetic diamond in quality and cost
has reached the level of marketization.
Parameters of CVD Lab Grown Diamonds
| CVD Rough Diamonds Details |
| Brand Name | Yuda Crystal |
| Name | CVD Rough Diamonds |
| Diamond Color | D-F |
| Diamond Clarity | VVS-SI |
| Diamond Carat Weight | 8-12carat |
| Diamond Cut | Uncut |
| Technology | CVD |
| 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) |
CVD 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
