Gemstone Certification
Certification provides independent verification of a gemstone's characteristics.
Why Certification Matters
- Independent quality verification
- Accurate grading of the 4Cs
- Treatment disclosure
- Insurance and resale value
- Peace of mind
Major Certification Labs
GIA (Gemological Institute of America)
- Most respected globally
- Strictest grading standards
- Recommended for diamonds
IGI (International Gemological Institute)
- Well-respected, widely available
- Good for both diamonds and colored stones
GRS (Gübelin Gem Lab / GRS)
- Specialists in colored gemstones
- Identifies origin (e.g., "Burma Ruby")
Reading a Certificate
Key information included:
- Certificate number (verifiable online)
- Stone measurements and weight
- 4Cs grades (for diamonds)
- Shape and cutting style
- Fluorescence
- Treatments (if any)
- Diagram showing inclusions
Verifying Certificates
Each certificate has a unique number. Visit the lab's website to verify authenticity by entering the certificate number.