Cut Quality Grader - Sapphire Proportion Analyzer | Free Tool
✂️ Cut Quality Grader
Sapphire Proportion Analyzer | Excellent to Poor Grading
Analyze Your Sapphire Cut
Adjust the sliders to match your sapphire's proportions. The grade updates in real-time.
Proportions
Visual cut diagram showing your proportions
Ideal Proportion Ranges
Depth Percentage
Table Percentage
Crown Angle
Pavilion Angle
💡 Expert Recommendations
Excellent Cut (90-100%)
Maximum brilliance and fire. Light reflects perfectly through the stone. Ideal proportions create exceptional sparkle. Premium pricing justified.
Very Good Cut (80-89%)
Strong brilliance with minor light leakage. Excellent value for money. Most buyers won't notice difference from Excellent. Recommended choice.
Good Cut (70-79%)
Acceptable brilliance but noticeable light leakage. Budget-friendly option. Visible difference from higher grades. Consider upgrading if possible.
Fair Cut (60-69%)
Significant light leakage. Reduced brilliance and fire. Only acceptable for very budget-conscious buyers. Not recommended for engagement rings.
Poor Cut (<60%)
Severe light leakage. Minimal brilliance. Stone appears dull. Avoid unless extremely budget-limited. Will not sparkle properly.
Why Use Cut Quality Grader?
Proportion Analyzer
Input depth, table, crown, and pavilion angles for complete cut analysis
Real-Time Grading
Instant Excellent to Poor grading based on GIA professional standards
Light Performance
See how well your stone reflects light with brilliance percentage rating
Ideal Ranges
Compare your stone to ideal, acceptable, and poor proportion ranges
Expert Recommendations
Get detailed advice on what each grade means for brilliance and value
100% Free
Professional cut grading tool at no cost. Use unlimited times
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