0.30 Ct. Bi Color / Parti Sapphire from Ceylon (Sri Lanka)

This transparent 0.30 carat emerald cut bi color parti sapphire measures 4.92 by 3.04 by 2.16 mm, and is presented in a faceted cutting style that emphasizes clarity of form and color. The gem displays medium color intensity, with distinct bi color zoning that ranges from cool cornflower blue to a lighter, near colorless band. Clarity is graded slightly included as evaluated at eye level, and the overall surface finish is described as excellent polish. The sapphire has undergone heat treatment to stabilize and enhance its hue, and its documented origin is Ceylon, Sri Lanka. These objective specifications describe a compact, well finished stone that retains natural inclusions and color zoning typical of quality Sri Lankan material.

The emerald cut has been executed to take advantage of the sapphires inherent optical characteristics, using broad, stepped facets to create directional light performance and controlled flash. The large, open table and elongated pavilion facets produce broad, linear reflections that follow the stones bicolor orientation, allowing the viewer to perceive distinct bands of tone while preserving overall transparency. Step facets reduce scintillation in favor of measured flashes and internal depth, which complements medium color intensity by revealing subtle variations rather than overwhelming them. The proportions represented by the stated dimensions promote efficient light return across the length of the stone, while the excellent polish minimizes surface diffusion and preserves crisp facet junctions. In practical terms, the emerald cut maximizes the visual clarity of the parti color expression, yielding a composed, architectural appearance that reads consistently under varied lighting, and that displays color transition without excessive dispersion or muddiness.

The Natural Sapphire Company presents this sapphire with attention to its material qualities and cutting rationale, offering a gem that balances natural character and cutter intent. The combination of faceted emerald cut geometry, precise proportions, and careful polish accentuates both the bi color nature and the stones clarity, making it well suited for settings that emphasize linear form and controlled light play. The documented heat treatment and Sri Lankan origin provide additional context for its color and appearance, and the stated measurements and grades allow for accurate planning by designers and clients seeking a measured, refined parti color sapphire.