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3 Carat 5 Carat HPHT Uncut Raw Diamond

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3 Carat 5 Carat HPHT Uncut Raw Diamond

3 Carat 5 Carat HPHT Uncut Raw Diamond
3 Carat 5 Carat HPHT Uncut Raw Diamond 3 Carat 5 Carat HPHT Uncut Raw Diamond 3 Carat 5 Carat HPHT Uncut Raw Diamond

Large Image :  3 Carat 5 Carat HPHT Uncut Raw Diamond

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: 1-7 working days
Payment Terms: T/T, Western Union
Supply Ability: 50000carats per month

3 Carat 5 Carat HPHT Uncut Raw Diamond

Product Name: HPHT Synthetic Diamond Brand: Yuda Crystal
Grade: Low Assortment: Good
Color: DEF Clarity: SI
Carat Weight: 3-5ct 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: 1-7 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:

3 Carat Uncut Raw Diamond


5 Carat Uncut Raw Diamond


SI1 SI2 DEF HPHT Rough Diamond

SI1-SI2 DEF Quality 3.0 Carat To 5.0 Carat Hpht Uncut Raw Diamond For Making Lab Grown Diamond


Lab Grown Rough Diamonds Description


Diamonds made in the laboratory are made in the laboratory. It starts with a small chemical called a diamond seed. It's then exposed to high temperatures, plus a carbon coating, all of which are designed to help laboratory made diamonds crystallize as they grow.
Diamonds grown in the laboratory have the same optical and chemical composition as those created by the earth. The flash point is the same - the central difference between them is their origin.
Lab produced diamonds allow you to maximize your budget, giving up more than 30% of your size at the same cost, while Earth created diamonds are works of incredible natural and traditional choice.
The diamonds grown in the laboratory have the same chemical composition and crystal structure as those produced in the earth. Synthetic diamonds (such as cubic zirconia) are made of different materials than Earth created and laboratory grown diamonds, and it's easy to distinguish between the two. The diamonds produced in the lab are real deals - they can't be distinguished from the diamonds created on earth, even with a professional loupe.


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 SI
Diamond Carat Weight 3-5 carat
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 - 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


3 Carat 5 Carat HPHT Uncut Raw Diamond 0

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