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Midnight Drift 665
Truncated Heptagon Topaz & Tourmaline Faceting Diagram · Optimized for RI 1.61 · 84 Index Gear
Cutting Diagram & Optical Specifications
- Target Material
- Topaz & Tourmaline
- Refractive Index
- RI 1.61 (Critical Angle 38.4°)
- Cut Shape
- Truncated Heptagon
- Facet & Tier Count
- 78 facets · 11 tiers
- Index Gear
- 84 index
- Length / Width Ratio
- 1.03
- Optical Optimization Score
- 0.937
- Brightness & Contrast
- 1.03 / 0.95
- Deliverable
- Instant Printable PDF Cutting Instructions
Midnight Drift 665 is a meetpoint gemstone faceting pattern computationally optimized for Topaz & Tourmaline (RI 1.61) on a 84-tooth index gear. Download includes complete tier-by-tier pavilion, girdle, and crown cutting angles, index numbers, and meetpoint diagrams.