Facet Grade Ceylon Geuda Sapphire Rough – 5.36 ct Unheated Alluvial Rough from Bibilegama, Sri Lanka

Stone Identity & Quality

This stone is a 5.36 ct natural Ceylon sapphire geuda rough measuring 9.8 × 8.8 × 6.5 mm. It is sourced from Bibilegama village around mining in Sri Lanka, specifically from the Godakawela side of the Rakwana mountain range. The stone is in natural unheated condition and belongs to the facet grade rough category, making it suitable for buyers who work with rough planning, heating analysis, and custom gemstone cutting.

Color & Visual Characteristics

In rough form, this sapphire shows the typical appearance of geuda-type material, with a light body tone and visible internal silky or smoky structure. This type of sapphire is often studied carefully because the visible internal rutile content may influence how the stone responds during heating. The current appearance is natural and unenhanced, and the final face-up color after any treatment or cutting cannot be judged only from the outside.

Internal & External Features

This is a natural alluvial rough sapphire with an original weathered surface and internal structural features visible under light. The stone shows fine rutile or silk-like inclusions and natural internal movement that are important when considering both heating potential and cutting orientation. As with most natural rough, the outer form does not tell the full story, so internal observation remains an essential part of the evaluation process.

Cutting & Treatment Potential

As a facet grade geuda rough, this sapphire has potential for both custom cutting and heating evaluation. Geuda material is valued in the trade because some stones may develop stronger blue color after proper heating, especially when the internal rutile structure is favorable. However, no professional seller should guarantee the final color, clarity improvement, or recovery before treatment and cutting. The best approach is careful planning based on depth, structure, inclusions, and orientation.

Source & Ethical Position

This stone was sourced through Danushka Gems & Minings from Bibilegama village around mining in Sri Lanka, a source area connected to the wider gem-bearing region around the Rakwana mountain range. The focus is on real source-connected gemstone work, honest presentation of rough material, and practical information for cutters, dealers, and gemstone buyers. This geuda sapphire represents the natural stage of a stone before any transformation through heating or faceting.