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5-6.0 Carat DEF Color VVS VS SI Purity Round HPHT Uncut Raw Diamonds For Loose Diamonds

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: RBC

Detail Information

Product Name :: HPHT Lab Grown Diamonds Color: DEF
Clarity: VVS VS SI Carat Weight: 5-6 Carat
Technology: HPHT Usage: For Cutting Lab Grown Diamonds
Payment Terms: 100% Payment In Advance Payment Mode: T/T, PayPal,Bank Transfer, Western Union
Delivery Time: 1-7 Working Days Depends On Quantity Courier: DHL, UPS, FedEx, TNT, EMS Etc
Packaging: As Export Standard Hardness: Moh's 10 Scale
Shape: Round Cut: Uncut
High Light:

DEF HPHT Uncut Raw Diamonds


5 Carat HPHT Uncut Raw Diamonds


SI HPHT Uncut Raw Diamonds

Product Description

5-6.0 Carat DEF Color VVS VS SI Purity Round HPHT Uncut Raw Diamonds For Loose Diamonds


Lab Created Diamonds Description


Lab-grown diamonds are also known as lab-made diamonds. Laboratory, there are two main breeding methods of diamond: CVD and HPHT.


Diamonds are considered the hardest material in the world. According to the grades of mohs hardness is divided into 10 levels, including diamond as the highest level. Since people know that diamond is composed of pure carbon that day, more and more people have studied in the laboratory to cultivate high temperature and high pressure diamond. At present, the high temperature and high pressure lab diamond raw materials industry development is rapid, widely used in various industries and processing industry.


High temperature and high pressure synthesis of diamond technology originated in the 1950 s, was originally used in aviation and military industry, nearly 10 years to realize a qualitative leap in the technological gem grade synthetic diamond both in terms of quality and cost are reached the market level.

Artificial diamonds, often referred to as lab-grown HPHT diamonds, are created by mimicking the crystallization process of natural diamonds. Natural diamonds are formed in the natural environment, often mixed with other elements together, making some natural diamonds are not completely transparent, can present a particular color. For example, some have pink diamonds, some have a touch of blue, and some have light yellow. High temperature and high pressure diamonds were grown in the lab, compared with natural diamond less impurities, so they are more pure, more transparent.

Natural diamonds take millions of years to form. Before the eruption, about 150 to 200 kilometers deep underground lava Wells can slowly cooling in the crater, has often been blocked because the crater of the volcano. Pure carbon material pressure is 4.5 * 10 ^ 6 ~ 9 Pa. When the temperature drops to 1000 ~ 1250℃, natural diamond crystals are formed. In some parts of the earth with the physical and chemical conditions of forming the diamond.

However, under the condition of natural production of natural diamond, can now be simulated in the laboratory, the use of high temperature and high pressure (HPHT) or chemical vapor deposition (CVD) techniques, in just a few weeks can produce laboratory production of gem grade diamond.


Parameters Of Lab Created Diamonds


Product Name Synthetic (Lab created) diamond
Material Lab-grown
Color DEF
Shape Round
Technology HPHT
Diamond Cut Uncut
Payment Terms 100% Payment In Advance
Diamond Carat Weight 2CT-4CTS
Shipping way DHL, FedEx, SF Express, UPS, EMS, TNT etc
M.O.Q Negotiable
Delivery Time 1-7 Working Days Depends On Quantity
Payment Methods T/T, PayPal, Western Union, Bank Transfer
Used Jewelry (necklace,ring,earring)
Application For Cutting Lab Grown Loose Diamonds
Place Of Origin Zhengzhou, China


Characteristics Of Lab Created Diamonds


Lab-grown diamonds are grown in the laboratory. People use advanced equipment to simulate the environment in which natural diamonds are formed.
This formation process is the main factor that distinguishes lab-created diamonds from mined diamonds. Lab-grown diamonds can be mass-produced within a few weeks. As a result, laboratory-grown diamonds are much cheaper than natural diamonds of the same size and quantity.

The synthetic diamond is the product of the development of high technology. Synthetic diamonds is more environmentally friendly and saves labor costs.


The Difference Between Lab 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, synthetic diamond and natural diamond exactly the same, the only difference is that the formation of their location.


Lab Created Diamonds Details

5-6.0 Carat DEF Color VVS VS SI Purity Round HPHT Uncut Raw Diamonds For Loose Diamonds 0

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