Phosphor Grace 163

Cutting Diagram & Optical Specifications

Target Material

Topaz & Tourmaline

Refractive Index

RI 1.61 (Critical Angle 38.4°)

Cut Shape

Heptagon

Facet & Tier Count

50 facets · 8 tiers

Index Gear

84 index

Length / Width Ratio

1.03

Optical Optimization Score

0.864

Brightness & Contrast

1.02 / 0.85

Deliverable

Instant Printable PDF Cutting Instructions

Phosphor Grace 163 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.