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3Ct 4Ct 5Ct Big Rough Diamonds VS SI Gem Quality 5mm To 20mm For Jewelry

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    Buy cheap 3Ct 4Ct 5Ct Big Rough Diamonds VS SI Gem Quality 5mm To 20mm For Jewelry from wholesalers
     
    Buy cheap 3Ct 4Ct 5Ct Big Rough Diamonds VS SI Gem Quality 5mm To 20mm For Jewelry from wholesalers
    • Buy cheap 3Ct 4Ct 5Ct Big Rough Diamonds VS SI Gem Quality 5mm To 20mm For Jewelry from wholesalers
    • Buy cheap 3Ct 4Ct 5Ct Big Rough Diamonds VS SI Gem Quality 5mm To 20mm For Jewelry from wholesalers
    • Buy cheap 3Ct 4Ct 5Ct Big Rough Diamonds VS SI Gem Quality 5mm To 20mm For Jewelry from wholesalers

    3Ct 4Ct 5Ct Big Rough Diamonds VS SI Gem Quality 5mm To 20mm For Jewelry

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    Brand Name : YUDA CRYSTAL
    Model Number : YD-A
    Certification : None
    Price : Negotiate
    Payment Terms : 100% Payment In Advance
    Supply Ability : 50000carats per month
    Delivery Time : 1-15 Working Days Depends On Quantity
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    3Ct 4Ct 5Ct Big Rough Diamonds VS SI Gem Quality 5mm To 20mm For Jewelry

    3 Carat 4 Carat And 5 Carat Big Size Gem Quality Rough Lab Grown Diamonds VS SI Purity


    Rough Lab Grown Diamonds Description


    1. What is cultivating diamond?
    Diamond is cultivated in the laboratory, the advanced technology is used to simulate the environment of natural diamond formation in the equipment, and the diamond crystal is used as seed to induce diamond crystal growth. The physical and chemical properties of cultivated diamonds are the same as those of natural diamonds. With the progress of science and technology, the purity and color of cultivated diamonds are getting higher and higher, which can be used for jewelry.
    At present, there are two main methods to produce and cultivate diamonds on the market: high temperature and high pressure method, referred to as HPHT; chemical vapor deposition, referred to as CVD.
    Nowadays, the large carat cultivation diamond growth technology has realized the mass production of white, yellow, blue, green, purple red and other color cultivation diamonds. The color of white diamonds can reach D-E level and the clarity can reach vvs-si level.


    2. Is it easy to distinguish cultivated diamond from natural diamond?

    Many people have similar doubts: since diamonds can be cultivated artificially, can they be mixed with natural diamonds? If I want to buy natural diamonds, will I buy cultivated diamonds at the price of natural diamonds?
    In fact, there is no need to worry about this. Now the quality inspection institutions use professional instruments to test the diamonds. By comparing the crystal shape, internal growth characteristics, inclusion characteristics, absorption spectrum, cathodoluminescence and other aspects of the tested diamonds, they can completely distinguish cultivated diamonds from natural diamonds. After all, natural diamonds are formed in a relatively stable environment deep underground for a long time. Natural diamonds have a long history, and the youngest diamonds are billions of years ago. However, it only takes a few weeks or even days to cultivate diamonds. There are subtle differences in the growth environment between the two, which can be distinguished by professional detection methods.


    Parameters of Rough Lab Grown Diamonds


    Rough Lab Grown Diamonds Details
    Brand NameYuda Crystal
    NameRough Lab Grown Diamonds
    Diamond ColorD-F
    Diamond ClarityVVS VS SI
    Diamond Carat Weight3.0-4.0ct, 4.0-5.0ct
    Diamond CutUncut
    TechnologyHPHT
    Size5.0-20.0mm
    ShapeRaw
    ApplicationFor Cutting Lab Grown Loose Diamonds
    Place Of OriginZhengzhou, China
    Delivery Time1 - 7 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)

    Rough Lab Grown Diamonds Introduction


    Natural diamonds are created by nature and are the result of high temperature and pressure formed over billions of years. The 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 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. 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$$$$$$$$

    Rough Lab Grown Diamonds Details


    Quality 3Ct 4Ct 5Ct Big Rough Diamonds VS SI Gem Quality 5mm To 20mm For Jewelry for sale
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