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5.0carat DEF VS Full White HPHT Lab Grown Rough Diamond For Loose Diamond

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    Buy cheap 5.0carat DEF VS Full White HPHT Lab Grown Rough Diamond For Loose Diamond from wholesalers
     
    Buy cheap 5.0carat DEF VS Full White HPHT Lab Grown Rough Diamond For Loose Diamond from wholesalers
    • Buy cheap 5.0carat DEF VS Full White HPHT Lab Grown Rough Diamond For Loose Diamond from wholesalers
    • Buy cheap 5.0carat DEF VS Full White HPHT Lab Grown Rough Diamond For Loose Diamond from wholesalers
    • Buy cheap 5.0carat DEF VS Full White HPHT Lab Grown Rough Diamond For Loose Diamond from wholesalers
    • Buy cheap 5.0carat DEF VS Full White HPHT Lab Grown Rough Diamond For Loose Diamond from wholesalers

    5.0carat DEF VS Full White HPHT Lab Grown Rough Diamond For Loose Diamond

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    Brand Name : YUDA CRYSTAL
    Model Number : A+
    Certification : None
    Price : Negotiate
    Payment Terms : 100% Payment In Advance
    Supply Ability : 50000carats per month
    Delivery Time : 1-7 Working Days Depends On Quantity
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    5.0carat DEF VS Full White HPHT Lab Grown Rough Diamond For Loose Diamond

    4.0ct 5.0ct DEF VVS VS Full White HPHT Lab Grown Rough Diamond For Loose Diamond


    Synthetic Rough Uncut Diamonds Description


    Laboratory growth of diamond, also called synthetic diamond, synthetic diamond, diamond is produced in the laboratory, and natural diamond on the chemical composition, lattice structure and physical properties are exactly the same.

    High temperature and high pressure (HPHT) and chemical vapor deposition (CVD) is the most commonly used in synthetic diamond industry white of the two methods of growth.

    Laboratory growth diamond is simulating natural diamond synthetic diamond growth environment, by using high temperature and high pressure (HTHP) and CVD (chemical vapor phase precipitation) synthesis, also called the diamond growth. Laboratory cultivation is the real diamond, physical properties, chemical composition and crystal structure of natural diamond is basically the same, all share 4C certification standards, has been IGI, GIA and other international authority certification issued by the certificate.

    In recent years, the production of natural rough diamonds have been falling, but the global demand for diamonds, has increased. The imbalance between supply and demand creates opportunities for lab-made diamonds.

    With the progress of human technology, scientists will have to natural diamond moved to the laboratory environment, the use of high pressure high temperature (HPHT) to simulate the diamond growth environment, with the size of the size of gravel for the growth of diamond seed.


    Parameters of Synthetic Rough Uncut Diamonds


    HPHT Lab Grown Diamonds Details
    Brand NameHenan Yuda Crystal
    NameRough Uncut Diamonds
    ColorD-F
    ClarityVVS VS
    Carat Weight4.0-5.0 carat
    CutUncut
    TechnologyHPHT
    Diamond ShapeRound
    ApplicationFor Jewellery(necklace,ring)
    Place Of OriginZhengzhou,Henan,China
    Delivery Time1 - 15 Working Days Base on Order Quantity
    Payment Terms100% Payment In Advance
    Payment MethodsPayPal,T/T, Western Union, Bank Transfer
    Shipping wayDHL,SF Express, FedEx, UPS, EMS, TNT etc
    M.O.QNegotiable
    Diamond TypeSynthetic(lab created)
    LocationZhengzhou,Henan,China
    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)

    Synthetic Rough Uncut Diamond Introduction


    High temperature and high pressure synthesis method is also called seed catalyst method. Graphite is a low pressure stable phase, while diamond (diamond mineralogy name) is a high pressure stable phase. Graphite to diamond direct transition to high pressure and high temperature conditions, generally take 10 gpa, pressure and temperature above 3000 ℃. If involved metal catalysts (such as Fe, Ni, Mn, Co and their alloys), graphite into diamond would significantly reduce the required temperature and pressure conditions, so the high temperature and high pressure diamond synthesis method involves metal catalysts. Metal contact coal as solvent between carbon source (graphite) seeds and diamond products. Carbon source in the high temperature side, crystal seed in low temperature. As the solubility of carbon source at high temperature is greater than that at low temperature, temperature difference acts as the driving force of carbon source diffusion from high end to low end, and carbon source gradually precipitates in seed crystal and diamond crystal gradually grows up. As the driving force of the crystal growth is caused by temperature difference, so this method is also referred to as the temperature difference method.

    Natural diamonds are created by nature, the result of billions of years of high temperature and pressure. Laboratory of rough diamond is produced in the laboratory, usually need a couple of weeks. The chemical difference is the same.

    So how do you distinguish between rough laboratory diamond and natural diamond?

    Unprocessed laboratory production of diamond and natural diamond had no obvious difference. Even professional gemologists need special equipment to identify them. By magnifying, professionals will be able to recognize in the lab, growth and production of diamond inclusions nuances.


    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
    Compressibility8.3*10-13 M2/N8.3*10-13 M2/N
    Hardness value90 GPA90 GPA
    Price$$$$$$$$

    Synthetic Rough Uncut Diamonds Details


    Quality 5.0carat DEF VS Full White HPHT Lab Grown Rough Diamond For Loose Diamond for sale
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