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4Ct 5Ct HPHT Rough Diamond DEF Color Lab Produced Diamonds

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4Ct 5Ct HPHT Rough Diamond DEF Color Lab Produced Diamonds

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Brand Name : YUDA CRYSTAL

Model Number : YD-A+

Certification : None

Place of Origin : Zhengzhou, China

MOQ : Negotiate

Price : Negotiate

Payment Terms : 100% Payment In Advance

Supply Ability : 50000carats per month

Delivery Time : 1-7 Working Days Depends On Quantity

Packaging Details : Carton box

Product Name : HPHT Rough Lab Grown Diamond

Brand : Yuda Crystal

Grade : High

Assortment : Good

Color : DEF

Clarity : VS

Carat Weight : 4.0-5.0ct

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 Mode : T/T, Bank Transfer, PayPal, Western Union

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

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4.0 - 5.0 ct per carat price D E F Color VS Clairty HPHT Rough Lab Grown Diamond


HPHT Rough Lab Grown Diamond​ Description


Rough Lab Grown Diamond made in the laboratory, not mined from the earth. Rough Lab Grown Diamond are not fakes, they are not cubic zircons, they are not crystals. They are identical in chemical composition to natural diamonds.


Although scientists have been using this process since the middle of 1900, the diamonds originally made are pumpkin colored. It is only in recent years that scientists have found a way to produce the most familiar white diamond. There are two ways to make Rough Lab Grown Diamond. One is to use extreme high pressure and high temperature to imitate the natural diamond process and dissolve carbon into diamond seeds; Another method is similar to 3D printing, in which carbon is layered on the crystal seeds. Then, put the seeds in a peculiar diamond microwave oven, inject carbon gas into the microwave oven and stick it on the seeds to slow down the growth of the seeds.


Perhaps not surprisingly, Rough Lab Grown Diamond are controversial in the gem world. The cost of laboratory training is quite high. We bring the best quality laboratory grown diamonds through excellent cutting and polishing procedures. We believe that the diamond cultivated in the laboratory is also a lifetime diamond. Some people say that the plants in the laboratory can grow at any time in the laboratory, just like the earth. The diamonds mined have been mined for many years, and they are still mined every day and put on the market every day. We say that the diamonds mined by the earth will never stop mining, and the diamonds planted in the laboratory will never stop growing in the laboratory with the latest technology.


Parameters of HPHT Rough Lab Grown Diamond​


HPHT Lab Grown Diamonds Details
Brand NameYuda Crystal
NameRough Lab Grown Diamonds
Diamond ColorD-F
Diamond ClarityVVS-SI
Diamond Carat Weight4.0-5.0 carat
Diamond CutUncut
TechnologyHPHT
Size5.0-15.0mm
ShapeRaw
ApplicationFor Cutting Lab Grown Loose Diamonds
Place Of OriginZhengzhou, China
Delivery Time1 - 15 Working Days Base on Order Quantity
Payment Terms100% Payment In Advance
Payment MethodsT/T, PayPal, Western Union, Bank Transfer
Shipping wayDHL, FedEx, SF Express, UPS, EMS, TNT etc
M.O.QNegotiable
Diamond TypeSynthetic(lab created)
LocationZhengzhou, China
Treatments AppliedNone
Fire Dispersion0.044(Same as Natural Diamond)
Brilliance Refraction Index2.42(Same as Natural Diamond)
Relative Density3.52(Same as Natural Diamond)
Chemical CompositionCarbon(Same as Natural Diamond)
Moh's Hardness10(Same as Natural Diamond)

HPHT Rough Lab Grown Diamond​ Introduction


​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
PropertiesEarth MinedLab Created
Guaranteed Conflict-FreeNoYes
Hardness (MOHS)1010
SP3 Carbon Diamond Bonds (%)100%100%
Internal Crystal StructureFace-Centered CubicFace-Centered Cubic
Hardness Comparable2.422.42
Relative Diversity3.523.52
Color Diffusion0.0440.044
ColorVarious GradesK to D grades
Price$$$$$$$$

HPHT Rough Lab Grown Diamond​ Details



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