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EFG SI VS VVS CVD Lab Raw Uncut Rough Diamond 8.0ct To 20.0ct

Minimum Order Quantity : Negotiate Price : Negotiate
Packaging Details : Carton box Delivery Time : 3-7 working days
Payment Terms : T/T, Western Union Supply Ability : 50000carats per month
Place of Origin: Zhengzhou, China Brand Name: YUDA CRYSTAL
Certification: None Model Number: YD-A+

Detail Information

Product Name: Lab Raw Uncut Rough Diamond Brand: Yuda Crystal
Grade: High Assortment: Good
Color: EFG Clarity: VVS VS SI
Carat Weight: 8.0-20.0ct Cut: Uncut
Technology: CVD Shape: Rough, Raw
Usage: For Cutting Lab Grown Polished Diamonds Component: Carbon
Hardness: Moh's 10 Scale Available Type: HPHT, CVD
Place Of Origin: Zhengzhou, China Payment Terms: 100% Payment In Advance
Payment Mode: T/T, Bank Transfer, PayPal, Western Union Delivery Time: 1-15 Working Days Depends On Quantity
Courier: DHL, FedEx, UPS, TNT, EMS Etc Packaging: As Export Standard
Customization: Welcome Polish: None
Symmetry: None Sample Order: Welcome
Treatments Applied: None Enhancement: None
High Light:

CVD Uncut Rough Diamond 8.0ct


uncut rough diamond 20.0ct


EFG SI VS VVS lab diamonds

Product Description

EFG Color SI VS VVS CVD Lab Raw Uncut Rough Diamond For Cutting Lab Diamonds


Lab Raw Uncut Rough Diamond Description


Lab grown diamonds are also named lab created diamonds, man made diamonds and synthetic diamonds. There are two main methods to create lab grown diamonds: CVD and HPHT.

Chemical Vapor Deposition is a growth method for cultivating diamonds. CVD (Chemical Vapor Deposition) diamonds are based on diamond seeds. With the aid of high-purity methane, hydrogen, nitrogen and other gases, the carbon molecules in methane and diamonds are continuously accumulated on the original diamonds in a microwave oven under high pressure. After layer-by-layer diffusion, transparent diamonds can be formed. The quality of this lab grown diamond is almost the same as natural diamonds. CVD diamond is a high-tech synthetic diamond whose material is mainly carbon, just like natural diamond. Its hardness, density, thermal conductivity, brightness, sparkle and fire color are almost the same as natural diamonds

There is also HPHT (High Pressure High Temperature) method. HPHT was applied to gem-grade cultivated diamonds earlier, and HPHT cultivated diamonds appeared in the jewelry market as early as 2010. HPHT diamonds usually have high color while CVD diamonds usually have high clarity.


Parameters of Lab Raw Uncut Rough Diamond


Lab Raw Uncut Rough Diamond Details
Brand Name Yuda Crystal
Name Lab Raw Uncut Rough Diamond
Diamond Color EFG
Diamond Clarity VS1-SI2
Diamond Carat Weight 8.0carat+
Diamond Cut Uncut
Technology HPHT
Size 5.0-7.0mm
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)


Lab Raw Uncut Rough Diamond 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 Raw Uncut Rough Diamond Details


EFG SI VS VVS CVD Lab Raw Uncut Rough Diamond 8.0ct To 20.0ct 0

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