Astral Prism 901

Cutting Diagram & Optical Specifications

Target Material

Spinel & Garnet (Rhodolite, Malaya, Pyrope)

Refractive Index

RI 1.72 (Critical Angle 35.5°)

Cut Shape

Heptagon

Facet & Tier Count

40 facets · 6 tiers

Index Gear

84 index

Length / Width Ratio

1.03

Optical Optimization Score

0.840

Brightness & Contrast

1.01 / 0.77

Deliverable

Instant Printable PDF Cutting Instructions

Astral Prism 901 is a meetpoint gemstone faceting pattern computationally optimized for Spinel & Garnet (Rhodolite, Malaya, Pyrope) (RI 1.72) on a 84-tooth index gear. Download includes complete tier-by-tier pavilion, girdle, and crown cutting angles, index numbers, and meetpoint diagrams.