While Cut grade is the
most important aspect of choosing a diamond, it does not greatly effect the design.
Diamonds are graded on proportions, symmetry and polish. GIA cut grades are Excellent, Very-good, Good and Poor. AGS uses a 0-10 scale, with 0 meaning Ideal.
Diamond grade analyzes and relates to:
- Brightness: White light reflected from a diamond
- Fire: The scattering of light into the colors of the rainbow
- Scintillation: Sparkle and the pattern of light and dark caused by internal reflections