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Cobalt Crown 273
Truncated Cushion Pentagon Quartz, Amethyst & Citrine Faceting Diagram · Optimized for RI 1.54 · 120 Index Gear
Cutting Diagram & Optical Specifications
- Target Material
- Quartz, Amethyst & Citrine
- Refractive Index
- RI 1.54 (Critical Angle 40.5°)
- Cut Shape
- Truncated Cushion Pentagon
- Facet & Tier Count
- 60 facets · 8 tiers
- Index Gear
- 120 index
- Length / Width Ratio
- 1.00
- Optical Optimization Score
- 0.830
- Brightness & Contrast
- 1.00 / 0.83
- Deliverable
- Instant Printable PDF Cutting Instructions
Cobalt Crown 273 is a meetpoint gemstone faceting pattern computationally optimized for Quartz, Amethyst & Citrine (RI 1.54) on a 120-tooth index gear. Download includes complete tier-by-tier pavilion, girdle, and crown cutting angles, index numbers, and meetpoint diagrams.