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Rectangular 7mm 9mm GH Color CVD Rough Raw Diamond For Ring

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Rectangular 7mm 9mm GH Color CVD Rough Raw Diamond For Ring

Rectangular 7mm 9mm GH Color CVD Rough Raw Diamond For Ring
Rectangular 7mm 9mm GH Color CVD Rough Raw Diamond For Ring Rectangular 7mm 9mm GH Color CVD Rough Raw Diamond For Ring Rectangular 7mm 9mm GH Color CVD Rough Raw Diamond For Ring

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Product Details:
Place of Origin: Zhengzhou, China
Certification: None
Model Number: YD-A+
Payment & Shipping Terms:
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

Rectangular 7mm 9mm GH Color CVD Rough Raw Diamond For Ring

Product Name: CVD Lab Grown Diamonds Brand: Yuda Crystal
Grade: High Assortment: Good
Color: GH Clarity: VVS VS
Carat Weight: 8.0-10.0ct Cut: Uncut
Technology: CVD Shape: Rough, Raw
Usage: For Cutting CVD 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:

9mm rough raw diamond


Rectangular 7mm rough raw diamond


GH Color CVD Rough

Rectangular Shape 7mm - 9mm GH Color Rough Raw Cvd Diamond For Synthetic Cvd Diamond Ring Making


Synthetic Cvd Diamond Description


The lab grown diamonds is made by using high technology to simulate the environment in which natural diamonds are formed in the earth's crust.
Although synthetic diamonds are manufactured in factories, their chemical and physical properties are very close to natural diamonds.

In the 1950s, scientists made diamonds in the laboratory for the first time. However, the diamonds manufactured at that time were too small to be suitable for jewelry. Nowadays, more and more companies are engaged in synthetic diamond manufacturing business. Many countries and regions are manufacturing synthetic diamonds for jewelry and industrial purposes.

CVD and HPHT are two main methods to make lab diamonds nowadays.

The traditional diamond manufacturing method is called the high pressure/high temperature (HPHT) method. It uses a device to simulate the high pressure and high temperature conditions of natural diamonds, and uses carbon materials in the device to produce synthetic diamonds.

A relatively new method called chemical vapor deposition (CVD) is to inject carbon-containing gas into a vacuum chamber and deposit its crystals on synthetic diamond seeds. This method requires lower temperature and lower pressure than the high-pressure high-temperature method. Both methods are currently very popular diamond manufacturing methods. The initial equipment cost of using the chemical vapor precipitation method to manufacture diamonds is lower than that of the high-pressure and high-temperature method, but the diamonds manufactured using this method require subsequent processing to improve the color.


Parameters of Synthetic Cvd Diamond

CVD Rough Diamonds Details
Brand Name Yuda Crystal
Name CVD Rough Diamonds
Diamond Color D-F
Diamond Clarity VVS-SI
Diamond Carat Weight 8.0-10.0carat
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)


Synthetic Cvd Diamond​ Introduction


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 $$$$$ $$$


Synthetic Cvd Diamond Details


Rectangular 7mm 9mm GH Color CVD Rough Raw Diamond For Ring 0

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Henan Yuda Crystal Co.,Ltd

Contact Person: Ms. Pang

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