GIA Grading Standards for Clarity

Below are the standards for colored gemstone grading for each type of stone

  • Type I – Gemstones
    Beryl
       Aquamarine
       Green
       Morganite
       Heliodor
    Chrysoberyl
       Green
       Yellow
    Quartz
       Smokey
    Spodumene
       Kunzite
       Green
    Topaz
       Blue
       Yellow
       Orange
       Pink
       Red
    Tourmaline
       Green
    Zircon
       Blue
    Zoisite
       Tanzanite
  • Type I – Clarity

    VVS – Very, Very Slightly Included (the best) Minute inclusions that are difficult to see using 10X, and are not visible at all to the naked eye.

    VS – Very Slightly Included Minor inclusions that are easier to see using 10X, but still not visible to the naked eye.

    SI1 – Slightly Included I The inclusions are easily seen using 10X, and are noticeable with the naked eye.

    SI2 – Slightly Included 2 The inclusions are more easily seen using 10X, and are quite visible with the naked eye.

    I1 – Included 1 The inclusions are very obvious and they have a moderate negative effect on the over-all appearance or durability of the gemstone.

    I2 – Included 2 The inclusions are very obvious and they have a severe negative effect on the over-all appearance or durability of the gemstone.

    I3 – Included 3 The inclusions are very obvious and they have a severe negative effect on both the over-all appearance and durability of the gemstone. .

  • Type 2- Gemstones
    Andalusite All
    Chrysoberyl
       Alexandrite
    Corundum
       All colors
      (Sapphire and Ruby)
    Garnet
       All species and colors
    Iolite – All
    Peridot – All
    Quartz
       Amethyst
       Citrine
       Ametrine
    Spinel – All
    Tourmaline
       Blue
       Orange
       Yellow
       Multi-colored (except
             watermelon color)
    Zircon
       Green
       Orange
       Red
       Yellow
  • Type 2 – Clarity

    VVS – Very, Very Slightly Included (the best) Minor inclusions that are somewhat easy to see using 10X, but still not visible to the naked eye.

    VS – Very Slightly Included Noticeable inclusions that are easier to see using 10X, and may be slightly visible to the naked eye.

    SI1 – Slightly Included I The inclusions are easily seen using 10X and are large or numerous, and are noticeable with the naked eye.

    SI2 – Slightly Included 2 The inclusions are easily seen using 10X and are large or numerous, and are very noticeable with the naked eye.

    I1 – Included 1 The inclusions are very obvious and they have a moderate negative effect on the over-all appearance or durability of the gemstone.

    I2 – Included 2 The inclusions are very obvious and they have a severe negative effect on the over-all appearance or durability of the gemstone.

    I3 – Included 3 The inclusions are very obvious and they have a sever negative effect on both the over-all appearance and durability of the gemstone.

  • Type 3 – Gemstones
    Beryl
       Emerald
    Tourmaline
       Red
       Pink
       Watermelon 
  • Type 3- Clarity

    VVS – Very, Very Slightly Included (the best) Noticeable inclusions that are easy to see using 10X, but usually not visible to the naked eye.

    VS – Very Slightly Included Obvious inclusions that are easy to see using 10X, and usually visible to the naked eye.
    SI1 – Slightly Included I The inclusions are large and numerous using 10X, and prominent with the naked eye.

    SI2 – Slightly Included 2 The inclusions are large and numerous using 10X, and very prominent with the naked eye.
    I1 – Included 1 The inclusions are very obvious and they have a moderate negative effect on the over-all appearance or durability of the gemstone.

    I2 – Included 2 The inclusions are very obvious and they have a severe negative effect on the over-all appearance or durability of the gemstone.

    I3 – Included 3 The inclusions are very obvious and they have a sever negative effect on both the over-all appearance and durability of the gemstone.