Midnight Plume 504

Cutting Diagram & Optical Specifications

Target Material

Corundum (Sapphire & Ruby)

Refractive Index

RI 1.76 (Critical Angle 34.6°)

Cut Shape

Truncated Cushion Pentagon

Facet & Tier Count

85 facets · 12 tiers

Index Gear

120 index

Length / Width Ratio

1.04

Optical Optimization Score

0.908

Brightness & Contrast

1.08 / 0.89

Deliverable

Instant Printable PDF Cutting Instructions

Midnight Plume 504 is a meetpoint gemstone faceting pattern computationally optimized for Corundum (Sapphire & Ruby) (RI 1.76) on a 120-tooth index gear. Download includes complete tier-by-tier pavilion, girdle, and crown cutting angles, index numbers, and meetpoint diagrams.