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Man Made Synthetic Rough Diamond 4-5ct DEF Color VVS VS Clarity

Minimum Order Quantity : Negotiate Price : Negotiate
Packaging Details : Carton box Delivery Time : 1-7 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: Yuda

Detail Information

Product Name :: Rough Lab Grown Diamonds Diamond Color: DEF
Diamond Clarity: VVS VS SI Diamond Carat Weight: 4-5 Carat
Technology: HPHT Usage: For Jewelry Accessory
Payment Terms: 100% Payment In Advance Payment Mode: Western Union,T/T, PayPal,Bank Transfer
Delivery Time: 1-7 Working Days Depends On Quantity Courier: FedEx, TNT, EMS Etc,DHL,, UPS
Packaging: As Export Standard Hardness: Moh's 10 Scale
Shape: Round Cut: Uncut
High Light:

5ct Synthetic Rough Diamond


4ct Synthetic Rough Diamond


5ct lab diamond colour def

Product Description

Man Made Synthetic Rough Diamonds 4-5ct DEF Color VVS VS Clarity For Jewelry Accessory


Synthetic Diamonds Description


Synthetic diamond is made up of 10 ~ 30 nm in diameter diamond crystal aggregation of polycrystalline diamond. The molecular structure of the synthetic diamond is not entirely octahedral structure of natural diamond, but a complex structure, can produce phosphor.

Artificial diamond, as the name implies, is cultivated in the laboratory., as the name suggests, are grown in a laboratory. Through the use of natural or synthetic diamond as a seed crystal, synthetic diamond layer in simulated natural diamond growth environment of the laboratory environment. Both natural diamond and artificial diamond are pure carbon crystals with identical crystal structure, physical properties, chemical properties and optical properties.

The physical, chemical and optical properties are all the same, so are lab-grown diamonds real or fake? The development of the diamond industry often use analogy to answer this question: laboratory breeding of diamond and natural diamond like greenhouse flowers and natural flowers. They are both flowers, but they grow in different environments. Artificial diamonds and natural diamonds are like ice in a refrigerator and ice in nature. They're both ice, but they formed in different environments.

Natural diamonds take millions of years to form. Before the eruption, due to the crater is often blocked, from about 150 to 200 kilometers deep in the earth's crust molten Wells can be slowly cooled down in the crater of the volcano. At this point, the pressure of pure carbon material is 4.5 ~ 6*10^9Pa. When the temperature drops to 1000 ~ 1250℃, the crystal forms natural diamond. Only a few places deep in the Earth have the physical and chemical conditions to form diamonds.

But, can now be simulated natural diamond growth conditions in the laboratory, using HPHT (high temperature and high pressure) or CVD (chemical vapor deposition) technique in just a few weeks endogenous output laboratory cultivation of gem grade diamond.


Parameters Of Synthetic Diamonds


Product Name Synthetic (Lab created) diamond
Material Lab-grown
Color D-H
Size 0.003CT-5CTS
Grade VVS-SI
Used Jewelry (necklace,ring,earring)
Application For Cutting Lab Grown Loose Diamonds
Place Of Origin Zhengzhou, China


Characteristics Of Synthetic Diamonds


Synthetic diamond are chemically, optically and structurally identical to mined diamonds. What does that mean?


The Difference Between Synthetic Diamond And Natural Diamond
Attribute Lab-Created Diamonds Natural diamond Distinction
Chemical composition C(carbon) C(carbon) No
Refractive index 2.42 2.42 No
Relative density 3.52 3.52 No
Dispersion 0.044 0.044 No
Hardness value 90 GPA 90 GPA No
Thermal conductivity 2*103 W/M/K 2*103 W/M/K No
Thermal property 0.8*10-6 K 0.8*10-6 K No
Light transmittance DEEP UV TO FAR TR DEEP UV TO FAR TR No


1016 OHM-CM

1016 OHM-CM



8.3*10-13 M2/N

8.3*10-13 M2/N



From a scientific point of view, the only difference between man-made diamond and natural diamond is that they are formed.


Synthetic Diamonds Details


Man Made Synthetic Rough Diamond 4-5ct DEF Color VVS VS Clarity 0

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