GLOBAL GEMOLOGY - RARE GEMS & JEWELS
  • HOME
  • ABOUT US
  • SHOP
  • GEMOLOGY
    • GEM ENCYCLOPEDIA
    • DECORATIVE PRINTS
    • THE ART OF GEMOLOGY
  • APPRAISALS
    • INSURANCE
    • DIVORCE
    • ESTATE TAX
    • ESTATE DISTRIBUTION
    • CHARITABLE DONATION
    • LIQUIDATION
    • APPRAISALS THRU EMAIL
  • SELL YOUR JEWELRY
  • JEWELRY EDUCATION
    • DIAMOND FACTS
    • JEWELER DIRECTORY
    • JEWELRY PERIODS
    • POCKET WATCHES
    • NATIVE AMERICAN JEWELRY
  • GLOSSARY

GIA Colored Stone Clarity Guide


Type I


Usually Eye Clean
Aquamarine
Chrysoberyl
Heliodor
Morganite
Smoky Quartz
Spodumene
Tanzanite
Tourmaline (green)
​Zircon (blue)

​Type II


Usually Included
Amethyst
Ametrine
Andalusite
Alexandrite
Citrine
Garnet
Iolite
Peridot
Ruby
Sapphire
​Spinel
Tourmaline (all except green, red, pink & watermelon)
Zircon (all except blue)

​TYPE III


Almost Always Included
Emerald
Red Beryl
Tourmaline (red, pink & watermelon)
 
​Type I
Type II
Type III
​VVS
Eye clean.
​Minute inclusions difficult to see under 10x magnification.
Usually eye clean.
​Minor inclusions somewhat easy to see under 10x magnification.
Usually eye clean.
Noticeable inclusions under 10x magnification.
VS
Usually eye clean.
​Minor inclusions somewhat easy to see under 10x magnification.
Noticeable under 10x magnification.  ​May be eye visible.
Obvious inclusions under 10x magnification.  May be eye visible.
​SI1
Easily noticeable under 10x magnification.  Slightly visible to the naked eye.
Obvious inclusions, either large or numerous visible under 10x magnification.
Apparent to the naked eye.

Prominent to the naked eye.
SI2
Easily visible to the naked eye.
Obvious inclusions, either large or numerous visible under 10x magnification.
Very apparent to the naked eye.
Very prominent to the naked eye.
​I1
Moderate effect on appearance or durability.
Moderate effect on appearance or durability.
Moderate effect on appearance or durability.
​I2
Severe effect on appearance or durability.
Severe effect on appearance or durability.
Severe effect on appearance or durability.
I3
Severe effect on both appearance and durability.
Severe effect on both appearance and durability.
Severe effect on both appearance and durability.
  • HOME
  • ABOUT US
  • SHOP
  • GEMOLOGY
    • GEM ENCYCLOPEDIA
    • DECORATIVE PRINTS
    • THE ART OF GEMOLOGY
  • APPRAISALS
    • INSURANCE
    • DIVORCE
    • ESTATE TAX
    • ESTATE DISTRIBUTION
    • CHARITABLE DONATION
    • LIQUIDATION
    • APPRAISALS THRU EMAIL
  • SELL YOUR JEWELRY
  • JEWELRY EDUCATION
    • DIAMOND FACTS
    • JEWELER DIRECTORY
    • JEWELRY PERIODS
    • POCKET WATCHES
    • NATIVE AMERICAN JEWELRY
  • GLOSSARY