Gossamer Sonata 618

Cutting Diagram & Optical Specifications

Target Material

Quartz, Amethyst & Citrine

Refractive Index

RI 1.54 (Critical Angle 40.5°)

Cut Shape

Cushion Pentagon

Facet & Tier Count

101 facets · 14 tiers

Index Gear

120 index

Length / Width Ratio

1.01

Optical Optimization Score

0.856

Brightness & Contrast

0.83 / 0.85

Deliverable

Instant Printable PDF Cutting Instructions

Gossamer Sonata 618 is a meetpoint gemstone faceting pattern computationally optimized for Quartz, Amethyst & Citrine (RI 1.54) on a 120-tooth index gear. Download includes complete tier-by-tier pavilion, girdle, and crown cutting angles, index numbers, and meetpoint diagrams.