Mining Journal - Field Report #302 Location: Ratnapura District, Sri Lanka
Date: April 8, 2024
Prospecting Notes: Hand-selected rough from traditional gem gravels
Specimen Documentation: Remarkable 6.2ct rough crystal exhibiting distinct asterism potential with vivid cornflower blue base color. Field examination revealed well-defined rutile silk formations creating pronounced star effect under direct light source.
Mine Site Log: Recovered from ancient river terrace deposits at 3.7 meter depth in classic Ratnapura gem-bearing sediments. Associated minerals included zircon, tourmaline, and garnet typical of Ceylon's metamorphic origin. Traditional panning methods employed by local miners.
Field Collection Analysis: Raw specimen displayed exceptional transparency with dense, parallel rutile inclusions creating six-ray star phenomenon. Color saturation remarkable for Ceylon origin - vivid cornflower blue typically associated with Kashmir material. No heat treatment indicators observed.
Rough Material Processing: High-dome cabochon cut executed to optimize star centering and maximize color intensity. Final yield: 2.98ct finished star sapphire, representing 48% recovery from original rough crystal.
Geological Survey Notes: Specimen represents finest Ceylon star sapphire quality - combination of vivid blue color and sharp asterism extremely rare in current market conditions.
Site Documentation: Star effect verified under multiple light sources. Recommended for premium collection or high-end jewelry applications requiring exceptional Ceylon provenance.