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Gilded Arc 728
Cut-Corner Trillion Corundum (Sapphire & Ruby) Faceting Diagram · Optimized for RI 1.76 · 96 Index Gear
Cutting Diagram & Optical Specifications
- Target Material
- Corundum (Sapphire & Ruby)
- Refractive Index
- RI 1.76 (Critical Angle 34.6°)
- Cut Shape
- Cut-Corner Trillion
- Facet & Tier Count
- 28 facets · 9 tiers
- Index Gear
- 96 index
- Length / Width Ratio
- 1.15
- Optical Optimization Score
- 0.893
- Brightness & Contrast
- 1.00 / 0.85
- Deliverable
- Instant Printable PDF Cutting Instructions
Gilded Arc 728 is a meetpoint gemstone faceting pattern computationally optimized for Corundum (Sapphire & Ruby) (RI 1.76) on a 96-tooth index gear. Download includes complete tier-by-tier pavilion, girdle, and crown cutting angles, index numbers, and meetpoint diagrams.