AGS cut grading is laser-focused on how a diamond handles light. It is a useful counterpoint when you are choosing between similar stones with different sparkle behavior.
At a glance
- Best for: cut shoppers who care about brightness and fire
- What it includes: light performance modeling, proportions, finish details
- Watch for: sellers mixing AGS cut language with non-AGS reports
How to use it
When comparing stones, map AGS cut grades to your priorities: consistent brightness in normal light, fewer dead zones, and strong symmetry. Pair this with a visual inspection in diffuse light to validate the report.
For deeper cut context, pair this with the Ring Settings guide and the 4Cs guide.
