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Topaz Spark 158
Cut-Corner Emerald Rectangle Quartz, Amethyst & Citrine Faceting Diagram · Optimized for RI 1.54 · 96 Index Gear
Cutting Diagram & Optical Specifications
- Target Material
- Quartz, Amethyst & Citrine
- Refractive Index
- RI 1.54 (Critical Angle 40.5°)
- Cut Shape
- Cut-Corner Emerald Rectangle
- Facet & Tier Count
- 39 facets · 15 tiers
- Index Gear
- 96 index
- Length / Width Ratio
- 1.70
- Optical Optimization Score
- 0.801
- Brightness & Contrast
- 0.93 / 0.76
- Deliverable
- Instant Printable PDF Cutting Instructions
Topaz Spark 158 is a meetpoint gemstone faceting pattern computationally optimized for Quartz, Amethyst & Citrine (RI 1.54) on a 96-tooth index gear. Download includes complete tier-by-tier pavilion, girdle, and crown cutting angles, index numbers, and meetpoint diagrams.