Diamond Certification Guide
Understanding diamond certification protects your investment and ensures you receive genuine quality. Learn about the leading certification bodies and what to look for in a diamond report.
Why Certification Matters
A diamond certificate from a reputable laboratory provides unbiased assessment of a diamond's quality characteristics.
Quality Assurance
Independent verification ensures you receive exactly what you're paying for—no surprises or misrepresentations.
Accurate Valuation
Certified diamonds command fair market prices. Without certification, pricing is subjective and unreliable.
Insurance Documentation
Insurance companies require certification for coverage. Certified diamonds are easier to insure and claim.
Resale Value
Certified diamonds are easier to sell and typically command higher prices in the secondary market.
Trusted Certification Bodies
GIA (Gemological Institute of America)
The world's foremost authority on diamonds, colored stones, and pearls. GIA created the 4Cs grading system and is universally trusted.
- Most stringent and consistent grading standards
- Non-profit organization with no commercial interests
- Laser inscription of report number on diamond girdle
- Online verification of all reports
- Industry gold standard for diamond certification
IGI (International Gemological Institute)
A leading independent gem certification laboratory with locations worldwide. Known for excellent lab-grown diamond certification.
- Largest independent gem certification organization
- Specializes in lab-grown diamond certification
- Detailed reports with diamond plotting
- Competitive pricing for certification services
- Widely accepted in retail and trade markets
AGS (American Gem Society)
Known for the most scientific approach to cut grading with their proprietary ASET light performance technology.
- Superior cut grading system (0-10 scale)
- Ideal cut grade reserved for exceptional stones
- Light performance mapping included
- Highly respected for cut quality assessment
- Consumer protection focus
Understanding Your Certificate
| Element | Description |
|---|---|
| Report Number | Unique identifier for verification and authenticity |
| Shape & Cut | Diamond shape and cutting style (e.g., Round Brilliant) |
| Measurements | Precise dimensions in millimeters |
| Carat Weight | Weight measured to hundredth of a carat |
| Color Grade | D (colorless) through Z (light yellow/brown) |
| Clarity Grade | FL (flawless) through I3 (included) |
| Cut Grade | Excellent to Poor (for round brilliants) |
| Polish & Symmetry | Quality of surface finish and facet alignment |
| Fluorescence | Diamond's reaction to UV light |
| Diamond Plot | Diagram showing inclusion locations |
Our Commitment to Certification
At DivinityByDrewB, we carry diamonds certified by GIA, IGI, and other reputable laboratories. Every certified diamond comes with its original laboratory report, and we can verify authenticity for any purchase.