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5.0 Carat 5.5 Carat 6.0 Carat HPHT Diamond Rough VS1 VS2 SI1 SI2 DEF Color

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5.0 Carat 5.5 Carat 6.0 Carat HPHT Diamond Rough VS1 VS2 SI1 SI2 DEF Color

5.0 Carat 5.5 Carat 6.0 Carat HPHT Diamond Rough VS1 VS2 SI1 SI2 DEF Color
5.0 Carat 5.5 Carat 6.0 Carat HPHT Diamond Rough VS1 VS2 SI1 SI2 DEF Color 5.0 Carat 5.5 Carat 6.0 Carat HPHT Diamond Rough VS1 VS2 SI1 SI2 DEF Color 5.0 Carat 5.5 Carat 6.0 Carat HPHT Diamond Rough VS1 VS2 SI1 SI2 DEF Color

Large Image :  5.0 Carat 5.5 Carat 6.0 Carat HPHT Diamond Rough VS1 VS2 SI1 SI2 DEF Color

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

5.0 Carat 5.5 Carat 6.0 Carat HPHT Diamond Rough VS1 VS2 SI1 SI2 DEF Color

Product Name: HPHT Synthetic Diamond Brand: Yuda Crystal
Grade: High Assortment: Good
Color: DEF Clarity: VS SI
Carat Weight: 5-6ct 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:

5.0 Carat HPHT Diamond Rough


5.5 Carat HPHT Diamond Rough


VS1 VS2 SI1 SI2 Diamond

VS1 VS2 SI1 SI2 Clarity DEF Color 5.0 Carat To 6.0 Carat Hpht Diamonds Rough For 2carat 2.5carat 3carat Lab Diamond Ring


Lab Grown Rough Diamonds Description


The best diamond made in the laboratory is type IIA, which is the purest diamond at present. In fact, only 2% of natural diamonds on earth are so pure. On the other hand, diamonds made in the laboratory are made in a highly controlled and monitored, pollution-free environment, so quality assurance is built-in. Although all the diamonds planted in the laboratory are great, just like the diamonds mined with clay, no two are the same. There are differences in reflection, clarity and refraction of light, which make the stone "shine", so the key is to find a stone that can speak to you.
The best laboratory diamonds are cut, polished and graded in the laboratory, and the laboratory has proven the diamonds mined. Transparency should be the same as or better than the ground diamonds mined, usually in the range of if to SI2. In addition to reading the diamond certification, you also want to examine the stone carefully and consider determining the quality of the 4 C: color, cut, clarity and carat weight. The cutting and definition of stone affect the brightness and luster of diamond by changing the way that diamond refracts light. The quality of diamond color is usually subjective. Because the saturation of hue can be controlled, there may be many kinds of stone colors. The carat weight of a diamond directly reflects its value, because it is an expression of rarity. The diamond planted in the laboratory is heavy and not as rare as the native diamond, but the carat weight can be used to refer to the size of the stone, and its price is natural.


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 VS-SI
Diamond Carat Weight 5.0-6.0 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 - 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)


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


5.0 Carat 5.5 Carat 6.0 Carat HPHT Diamond Rough VS1 VS2 SI1 SI2 DEF Color 0

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