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ZCOVA uses the 4C’s (Colour, Clarity, Cut, Carat) to evaluate the quality and characteristics of diamonds.
Buying a diamond for the first time can be overwhelming, but it shouldn’t be that way.
Implemented by the Gemological Institute of America (GIA), the 4C’s is a globally accepted standard for evaluating diamonds.
Colour
  • D
  • E
  • F
  • G
  • H
  • I
  • J
  • K
  • L,M
  • D colour is the highest grade and completely colourless (White). It is extremely rare, which translates a higher value.
    E colour is considered colourless. It is only detectable by the gemologists when using master-stones for comparison.
    F colour has a nearly undetected amount of colour. The difference between E and F is only visible if it is compared with D colour.
    G colour is near colourless and the colour is only noticeable when compared to D and E colours.
    H colour is near colourless, which will still appear white if not compared with higher colour grade diamonds.
    I colour is slightly tinted, but not noticeable when the stones are mounted.
    J colour is slightly tinted, but when it is set in yellow gold, the yellow tint in the diamond will be masked by the yellow gold.
    K colour has a slight yellow tint that is noticeable.
    L and M colours are similar to K colour. These diamonds have a yellow tint that can be seen with naked eye and still favoured by some.
    Clarity
    Recommended by ZCOVA
    F
    Flawless with no blemishes or inclusions.
    IF
    Internally Flawless with insignificant blemishes and no inclusions.
    VVS1, VVS2
    Very Very Slightly Included with very minor inclusions.
    VS1, VS2
    Very Slightly Included with minor inclusions.
    SI1, SI2
    Slightly Included.
    Cut
    Excellent
    Very Good
    Good
    Poor, Fair
    The diamond’s cut is one of the most important parts that define the beauty of a diamond.
    A well cut and polished diamond determines its brilliance and scintillation.
    Carat
    0.3
    10
    A simplified and modernised way to purchase outstandingly
    sophisticated diamonds and coloured gemstones.
    Let us be of assistance in the search for your perfect diamond.
    Diamond
    Our diamonds are evaluated based on the 4Cs by the Gemological Institute of America.
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    Colour
    D
    D colour is the highest grade and completely colourless (White). It is extremely rare, which translates a higher value.
    E
    E colour is considered colourless. It is only detectable by the gemologists when using master-stones for comparison.
    F
    F colour has a nearly undetected amount of colour. The difference between E and F is only visible if it is compared with D colour.
    G
    G colour is near colourless and the colour is only noticeable when compared to D and E colours.
    H
    H colour is near colourless, which will still appear white if not compared with higher colour grade diamonds.
    I
    I colour is slightly tinted, but not noticeable when the stones are mounted.
    J
    J colour is slightly tinted, but when it is set in yellow gold, the yellow tint in the diamond will be masked by the yellow gold.
    K
    K colour has a slight yellow tint that is noticeable.
    L,M
    L and M colours are similar to K colour. These diamonds have a yellow tint that can be seen with naked eye and still favoured by some.
    Clarity
    Recommended by ZCOVA
    F
    Flawless with no blemishes or inclusions.
    IF
    Internally Flawless with insignificant blemishes and no inclusions.
    VVS1, VVS2
    Very Very Slightly Included with very minor inclusions.
    VS1, VS2
    Very Slightly Included with minor inclusions.
    Recommended by ZCOVA
    SI1, SI2
    Slightly Included.
    Cut
    Excellent
    Very Good
    Good
    Poor, Fair
    The diamond’s cut is one of the most important parts that define the beauty of a diamond.
    A well cut and polished diamond determines its brilliance and scintillation.
    Carat
    0.3
    10
    A simplified and modernised way to purchase outstandingly
    sophisticated diamonds and coloured gemstones.