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VVS VS SI D E F 7.0ct 7.5ct HPHT Rough Diamond 8 Carat Uncut Diamond

Minimum Order Quantity : Negotiate Price : Negotiate
Packaging Details : Carton box Delivery Time : 1-15 working days
Payment Terms : T/T, Western Union, PayPal, Bank Transfer Supply Ability : 50000carats per month
Place of Origin: Zhengzhou, China Brand Name: YUDA CRYSTAL
Certification: None Model Number: YD-A+

Detail Information

Product Name: HPHT Synthetic Diamond Brand: Yuda Crystal
Grade: High Assortment: Good
Color: DEF Clarity: VVS VS SI
Carat Weight: 7-8ct Cut: Uncut
Technology: HPHT Shape: Rough, Raw
Usage: For Cutting Lab Grown 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:

7.0ct HPHT Rough Diamond

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7.5ct HPHT Rough Diamond

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VVS 8 carat uncut diamond

Product Description

VVS-VS-SI Clarity D-E-F Color 7.0-8.0ct HPHT Rough Diamond For Cutting 2.5ct 3.0ct 4.0ct Lab Diamonds

 

Lab Grown Rough Diamonds Description

 

Diamonds produced in laboratories, as the name suggests, are synthetic diamonds produced in laboratories. It's the only thing that's different from their naturally occurring counterparts. Managed under strict guidelines and a highly controlled pressure environment, authorized creators replicate the exact composition of natural diamonds. Since the core of diamonds is carbon, the diamonds made in the laboratory have exactly the same chemical and physical properties, and there is no monopoly regulation in the mining industry, so they are cost-effective for consumers.

Diamonds grown in the laboratory are manufactured by advanced processes such as high pressure high temperature (hPTP) and chemical vapor deposition (CVD). When using the hPTP creation method, a small diamond seed is placed in a pure carbon form. The seeds are then exposed to temperatures above 1500 degrees Celsius and pressure of about 1.5 million pounds per square inch. The fusion of the two components forms pure carbon diamond. When CVD is used, the process is slightly different. A diamond seed is placed in a heated sealed chamber and exposed to a carbon rich gas. High temperatures of 800 degrees Celsius combine with the gas, causing the carbon to crystallize and form diamonds. These processes are merely replications of the same environment in the earth's core.

 

Parameters of Lab Grown Rough Diamonds

 

HPHT Lab Grown Diamonds Details
Brand Name Yuda Crystal
Name Rough Lab Grown Diamonds
Diamond Color D-F
Diamond Clarity VVS-SI
Diamond Carat Weight 7-8 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 Grown Rough Diamonds Introduction


HPHT is the abbreviation for high temperature and high pressure treatment, and its purpose is to change or improve the natural body color of certain types of diamonds to make them more valuable.


In the past, it was called Pegasus diamond and GE POL diamond. The reason why it is called GE Diamond is because The technology developed by GE in the United States is a new product exclusively sold by POL, a subsidiary of Israel's LKI, in 1999.


HPHT technology is to process natural diamonds at high temperature and high pressure to enhance the color grade of diamonds. In one move, it can be upgraded to 4-6 levels. However, not every diamond can be processed by this technology. It must have a J color or higher, and be free of impurities and high-clarity quality. During processing, the results cannot be predicted. In other words, it is not certain what level it can be promoted to.


At the same time, diamonds treated with HPHT may deepen or change in color to become a colored diamond.

 

Natural diamonds are created by nature and are the result of high temperature and pressure formed over billions of years. The Rough 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 Rough Lab Grown Diamonds and natural diamonds?

There is no obvious difference between the Rough 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 Grown Rough Diamonds Details

 

VVS VS SI D E F 7.0ct 7.5ct HPHT Rough Diamond 8 Carat Uncut Diamond 0

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