Onyx Gleam 569

Cutting Diagram & Optical Specifications

Target Material

Topaz & Tourmaline

Refractive Index

RI 1.61 (Critical Angle 38.4°)

Cut Shape

Pentagon

Facet & Tier Count

35 facets · 7 tiers

Index Gear

120 index

Length / Width Ratio

1.05

Optical Optimization Score

0.838

Brightness & Contrast

0.88 / 0.81

Deliverable

Instant Printable PDF Cutting Instructions

Onyx Gleam 569 is a meetpoint gemstone faceting pattern computationally optimized for Topaz & Tourmaline (RI 1.61) on a 120-tooth index gear. Download includes complete tier-by-tier pavilion, girdle, and crown cutting angles, index numbers, and meetpoint diagrams.