2.5-4.0 Ct DEF Color Raw Lab Created Rough Diamonds For Cutting Carat Loose Diamonds
Lab Created Rough Diamonds Description
Both natural diamond and cultivated diamond are pure carbon crystals, and their physical, chemical, crystal structure and optical properties are exactly the same.
How are diamonds made?
1. high pressure high temperature process (HPHT)
In the laboratory or factory to create high pressure and high temperature environment to produce diamonds, that is to imitate the formation conditions of natural diamonds in the depths of the earth. In the growth chamber, the carbon source decomposes in the molten metal, and the carbon atoms gather on a very small cultivated or natural diamond seed through the metal to form a unique cultivated diamond crystal.
2. chemical vapor deposition (CVD)
Diamonds are produced in a laboratory vacuum using carbon rich gases such as methane. The process of CVD is to decompose methane into carbon and hydrogen atoms, and then deposit them on diamond seeds to form square and flat diamond crystals.
How long does it take to make a diamond?
It usually takes weeks to make diamonds in the laboratory. Compared with the millions or even billions of years of natural diamond formation in the depths of the earth, this time can be said to be very short.
It is worth mentioning that, like natural diamonds, cultivated diamonds can be artificially treated to change color, or to improve their positive appearance and clarity.
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).
Parameters of Lab Created Rough Diamonds
| Lab Created Rough Diamonds Details |
| Brand Name | Yuda Crystal |
| Name | Lab Created Rough Diamonds |
| Diamond Color | D-F |
| Diamond Clarity | VS-SI |
| Diamond Carat Weight | 2.5-4.0 carat |
| 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 - 7 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) |
Lab Created Rough 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 | $$$$$ | $$$ |
Lab Created Rough Diamonds Details
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4 Carat Loose Lab Created Diamond Lab Grown 2.5 Carat Diamond Images
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