Amethyst Torrent 897

Cutting Diagram & Optical Specifications

Target Material

Topaz & Tourmaline

Refractive Index

RI 1.61 (Critical Angle 38.4°)

Cut Shape

Truncated Heptagon

Facet & Tier Count

148 facets · 17 tiers

Index Gear

84 index

Length / Width Ratio

1.01

Optical Optimization Score

0.898

Brightness & Contrast

0.92 / 0.91

Deliverable

Instant Printable PDF Cutting Instructions

Amethyst Torrent 897 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.