Contact Us

Contact Person : Li

Phone Number : +86 371 53395413

WhatsApp : +8615225124915

Free call

4ct DEF Carbon HPHT Lab Grown Rough Diamonds VVS Clarity No Grey For Ring

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

Detail Information

Product Name: Synthetic Rough Uncut Diamond Brand: Yuda Crystal
Grade: High Diamond Color: DEF
Diamond Clarity: VVS VS Diamond Carat Weight: 3-4ct
Diamond Cut: Uncut Technology: HPHT
Diamond Shape: Round Usage: For Ring
Component: Carbon Hardness: Moh's 10 Scale
Available Type: HPHT Place Of Origin: Zhengzhou,Henan,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: FedEx, DHL, UPS, TNT, EMS Etc
Customization: Welcome Polish: None
Sample Order: Welcome Treatments Applied: None
High Light:

No Grey HPHT Lab Grown Diamonds


VVS Clarity Lab Grown Diamonds


Carbon Lab Grown Rough Diamonds

Product Description

3.0-4.0ct DEF VVS VS No Grey No Blue HPHT Lab Grown Rough Diamonds For Ring


Lab Grown Rough Diamond Description


Synthetic diamonds are mainly produced by chemical vapor deposition (CVD) or high pressure and high temperature (HPHT) methods, and their quality is similar to that of natural diamonds. Artificial diamond is often used to processing priceless jewelry, it can be cut into various shapes, and polishing for many different kinds of diamond products.

In the past ten years, manufacture diamond lab has received the widespread attention, because it allows a lot of people think are difficult to before the new diamond applications. Synthetic diamond is a kind of environmental protection product, 100% without conflict.

With the progress of human technology, scientists have to transfer natural diamond to the laboratory environment, the use of high pressure high temperature (HPHT) simulation of the diamond growth environment, the size of the diamond gravel as seeds to grow. Nowadays, more and more companies are engaged in the manufacture of artificial diamonds. Many countries and regions are in production for jewellery and industrial use of artificial diamond.

Since diamonds can be grown artificially, can they be mixed with natural diamonds?

By measurement of the use of professional equipment, the color of the diamond, crystal shape, crystal surface characteristics, internal inclusion and, comparing the absorption spectrum and ultraviolet fluorescence characteristics can be fully distinguish artificial cultivation of diamond and natural diamond. After all, natural diamond crystals formed in the billions of years ago, but artificial diamond can only be formed in a few days. There is no difference between the two, through professional testing methods can be distinguished.


Parameters of Lab Grown Rough Diamond 


HPHT Lab Grown Diamonds Details
Brand Name Henan Yuda Crystal
Name Rough Uncut Diamonds
Color D-F
Clarity VVS VS
Carat Weight 3.0-4.0 carat
Cut Uncut
Technology HPHT
Diamond Shape Round
Application For Jewellery
Place Of Origin Zhengzhou,Henan,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 SF Express, DHL, FedEx, UPS, EMS, TNT etc
M.O.Q Negotiable
Diamond Type Synthetic(lab created)
Location Zhengzhou,Henan,China
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 Diamond Introduction


Natural diamonds are created by nature, is the result of the billions of years of high temperature and high pressure formation. Laboratory-grown diamonds are usually produced in a lab for several weeks. Both on the chemistry of the difference is the same.

So how do you distinguish between laboratory cultivation of diamond and natural diamond?

There is no discernible difference between lab-grown diamonds and natural diamonds. Even professional gemologists also need special equipment to identify them. By magnifying, professionals will be able to recognize in the lab, growth and production of diamond inclusions nuances.


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 Diamond Details

4ct DEF Carbon HPHT Lab Grown Rough Diamonds VVS Clarity No Grey For Ring 0


You Might Be Into These
Get in touch with us

Enter Your Message
+86 15225124915