3.53 ct Ceylon Natural Unheated Violetish-Blue Sapphire Rough from Bibilegama, Sri Lanka – Clean Facet Grade Alluvial Rough

Stone Identity & Quality

This is a 3.53 ct Ceylon Natural Unheated Violetish-Blue Sapphire rough measuring 9.7 × 6.7 × 4.8 mm. The stone is sourced from Bibilegama village around mining in Sri Lanka and is described as clean facet-grade alluvial rough from old river mining. It is suitable for buyers, gem cutters, dealers, collectors, and jewelers who are looking for natural unheated Ceylon sapphire rough with practical cutting potential and interesting color behavior.

Color & Visual Characteristics

The sapphire shows a violetish-blue body color with a visible blue-to-violet visual shift under different light sources. In fluorescent light, the stone can appear more blue, while under incandescent light, the violet tone can become more noticeable. This should be described as light-dependent visual behavior. The color is attractive in rough form, but the final appearance after cutting will depend on orientation, depth, pavilion angles, and how the cutter positions the color.

Internal & External Features

This rough is described as clean, with a useful internal structure for cutting evaluation. The external surface shows natural alluvial texture, rounded shape, and old river mining character. These natural surface features are normal for sapphire rough transported through Sri Lanka’s gem-bearing river systems. During cutting preparation, the cutter should study any surface marks, clean areas, and the best direction to preserve both color and weight.

Cutting, Specimen, or Treatment Potential

As facet-grade rough, this sapphire can be studied for a custom faceted gemstone. The 9.7 × 6.7 × 4.8 mm body gives the cutter useful length, width, and depth for planning. A careful cutting approach can help balance face-up color, size, and brilliance, but no final result should be promised before physical inspection and cutting study. Important factors include color direction, orientation, clean area, surface removal, final shape, and yield. Custom cutting and certification can be arranged if suitable.

Source & Ethical Position

Danushka Gems & Minings works directly with gemstone sourcing areas in Sri Lanka, presenting rough stones with honest evaluation, origin transparency, and practical cutting insight. This sapphire rough is connected to Bibilegama village around mining in Sri Lanka, an old river mining source area. Our goal is to help buyers understand the real character of each stone before cutting, including its color, structure, natural surface, and possible transformation path from rough to finished gemstone.