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0.03ct To 20ct VS Rough Lab Grown Diamonds HPHT D E Color Diamonds For Pendant

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
Place of Origin: Zhengzhou, China Brand Name: YUDA CRYSTAL
Certification: None Model Number: YD-A

Detail Information

Product Name: Rough Lab Grown Diamonds Brand: Yuda Crystal
Grade: High Assortment: Good
Color: DE Clarity: VS+
Carat Weight: 3point To 20ct Cut: Uncut
Technology: HPHT Shape: Rough, Raw
Usage: For Cutting HPHT 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:

20ct Rough Lab Grown Diamonds


0.03ct Rough Lab Grown Diamonds


HPHT D E Color Diamonds

Product Description

DE Color VS Clarity Rough Lab Grown Diamonds Made By HPHT Method


Rough Lab Grown Diamonds Description


Lab-grown diamonds are real diamonds.
There are two ways to create rough lab-grown diamonds. They are HPHT and CVD methods.
The HPHT method is a more traditional diamond cultivation method that uses molten metal alloys such as iron (Fe), nickel (Ni) or cobalt (Co) to form diamonds.
The HPHT diamond process takes place in a small capsule in a device with ultra-high pressure. In this capsule, the diamond powder is dissolved in the molten metal solvent, and then begins to crystallize to form diamond crystals. The entire crystallization process will take weeks. At a time, one or more crystals are produced.
Except for the octahedral body, the diamond crystals grown using HPHT technology are usually cubic crystals. Since natural diamonds and HPHT synthetic diamonds have different crystal shapes, and their internal growth structures are also very different, we can distinguish between natural diamonds and HPHT synthetic diamonds through these two points.

In addition, HTHP synthetic diamonds usually have certain visual characteristics, such as color distribution, fluorescence partition, grain structure, and metal inclusions. 

In order to cultivate colorless HPHT diamonds, apart from the need to isolate nitrogen during the cultivation process, the cultivation of high-purity colorless diamonds (type IIa or type IIb) often requires a longer cultivation period and stricter temperature and pressure conditions. As a result, the cultivation cycle is longer than that of type Ib synthetic diamonds, so how to use HPHT synthesis to grow large-grain crystals has always been a problem. However, with the development of technology, it is now possible to use HPHT synthesis to grow more than 10 carats diamond crystals too.

In the process of HPHT diamond cultivation, you can also add chemical elements or radiant heating to make the crystal appear blue or red, but this practice is not common.

Parameters of Rough Lab Grown Diamonds


Rough Lab Grown Diamonds Details
Brand Name Yuda Crystal
Name Rough Lab Grown Diamonds
Diamond Color D-F
Diamond Clarity VVS VS SI
Diamond Carat Weight 0.03ct -20ct
Diamond Cut Uncut
Technology HPHT
Size 1.0-20.0mm
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 Diamonds Introduction


Natural diamonds are created by nature and are the result of high temperature and high pressure formed over billions of years. The Lab Grown Diamonds are produced in the laboratory, usually in a few weeks. The chemical composition 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. 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 $$$$$ $$$


Rough Lab Grown Diamonds Details


0.03ct To 20ct VS Rough Lab Grown Diamonds HPHT D E Color Diamonds For Pendant 0

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