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Gossamer Corona 273
Truncated Cushion Heptagon Quartz, Amethyst & Citrine Faceting Diagram · Optimized for RI 1.54 · 84 Index Gear
Cutting Diagram & Optical Specifications
- Target Material
- Quartz, Amethyst & Citrine
- Refractive Index
- RI 1.54 (Critical Angle 40.5°)
- Cut Shape
- Truncated Cushion Heptagon
- Facet & Tier Count
- 106 facets · 13 tiers
- Index Gear
- 84 index
- Length / Width Ratio
- 1.01
- Optical Optimization Score
- 0.876
- Brightness & Contrast
- 0.88 / 0.89
- Deliverable
- Instant Printable PDF Cutting Instructions
Gossamer Corona 273 is a meetpoint gemstone faceting pattern computationally optimized for Quartz, Amethyst & Citrine (RI 1.54) on a 84-tooth index gear. Download includes complete tier-by-tier pavilion, girdle, and crown cutting angles, index numbers, and meetpoint diagrams.