Global Gemology & Appraisals - Premier Jewelry Valuation Services
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GIA COLORED STONE CLARITY GUIDE

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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)

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  • HOME
  • QUALIFICATIONS
  • SERVICES
    • APPRAISALS
    • APPRAISAL REVIEW
    • VIP APPRAISAL CONCIERGE
    • EXPERT WITNESS & LITIGATION SUPPORT
    • SELL YOUR JEWELRY
  • CLIENTELE
    • ATTORNEYS
    • ESTATE PLANNING PROFESSIONALS
    • VIP & CELEBRITY CLIENTELE
    • LAW ENFORCEMENT AGENCIES
    • INSURANCE COMPANIES
    • INDEPENDENT JEWELERS
  • SHOP
  • GEMOLOGY
    • GEM ENCYCLOPEDIA
    • THE ART OF GEMOLOGY