Silken Spark 891

Cutting Diagram & Optical Specifications

Target Material

Natural & Lab-Grown Diamond

Refractive Index

RI 2.42 (Critical Angle 24.4°)

Cut Shape

Oval

Facet & Tier Count

116 facets · 32 tiers

Index Gear

96 index

Length / Width Ratio

1.36

Optical Optimization Score

1.032

Brightness & Contrast

0.87 / 1.15

Deliverable

Instant Printable PDF Cutting Instructions

Silken Spark 891 is a meetpoint gemstone faceting pattern computationally optimized for Natural & Lab-Grown Diamond (RI 2.42) on a 96-tooth index gear. Download includes complete tier-by-tier pavilion, girdle, and crown cutting angles, index numbers, and meetpoint diagrams.