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7.0ct 8.0ct CVD Lab Grown Diamonds Rectangular GHI Color For Oval Diamonds

Minimum Order Quantity : Negotiate Price : Negotiate
Packaging Details : Carton box Delivery Time : 1-7 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: CVD Lab Grown Diamonds Brand: Yuda Crystal
Grade: High Assortment: Good
Color: GHI Clarity: VVS VS
Carat Weight: 7.0-7.99ct 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: 1-7 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:

8.0ct CVD Lab Grown Diamonds

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7.0ct CVD Lab Grown Diamonds

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GHI Color Lab Created Diamonds

Product Description

Ractangular Shape GHI Color 7.0-8.0ct CVD Lab Grown Diamonds For Cutting Oval Shape Cvd Polish Diamonds

 

CVD Lab Grown Diamonds Description

 

The gem quality synthetic diamond produced by the CVD (chemical vapor deposition) method is beautiful in appearance and has almost the same properties as natural diamonds. Because of their high purity, these CVD products belong to Type IIa, which constitutes only a small portion of natural diamonds. Under the advanced detection technology, any diamond sample using CVD growth method can be clearly identified.

Under the conditions of CVD, the diamond growth process will produce easily detectable characteristics, including:

1. Low-pressure, high-energy hydrogen-rich environment
2. Silicon at the growth site
3. Nitrogen remains in the growth part
4. Layers of carbon atoms on the growth surface accumulate

A hydrogen-rich environment can cause defects, called vacancies, because occasionally carbon atoms will leave the diamond crystal, creating vacancies. The carbon vacancy next to the silicon atom can form a silicon vacancy (Si-V) center, which is very rare in nature. The carbon vacancy adjacent to the nitrogen atom can form a nitrogen vacancy (N-V) center, which is very rare in nature. The defects of these two vacancies can be detected by spectroscopic measurements such as photoluminescence, ultraviolet irradiation and light absorption. Since diamond has the characteristics of layer-by-layer formation, and nitrogen is non-uniformly fused between the layers, growth stripes can be observed.

 

Parameters of CVD Lab Grown Diamonds

 

CVD Lab Grown Diamonds Details
Brand Name Yuda Crystal
Name CVD Lab Grown Diamonds
Diamond Color D-F
Diamond Clarity VVS-VS
Diamond Carat Weight 7.0-8.0carat
Diamond Cut Uncut
Technology CVD
Size Customization
Shape Raw, Ractangular
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

 

7.0ct 8.0ct CVD Lab Grown Diamonds Rectangular GHI Color For Oval Diamonds 0

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