1.12 Ct. Blue Sapphire from Madagascar

This 1.12 carat transparent blue sapphire presents an asscher octagon shape, precisely cut to dimensions of 6.18 x 6.16 x 3.14 mm, originating from Madagascar and supplied by The Natural Sapphire Company. The gem has been faceted to an asscher cut profile, exhibiting the square with truncated corners octagonal outline that defines the style, and it carries a clarity grade of very very slightly included evaluated at eye level, intense color intensity, and an excellent polish. No enhancement has been applied, so the stone’s optical properties and color are entirely natural, a critical attribute for collectors and connoisseurs who prioritize untreated material. The faceted cutting style is executed to emphasize geometric harmony, symmetry, and optical precision, delivering a gemstone that reads both technically accomplished and inherently vibrant.

The asscher faceting schema employed on this sapphire utilizes concentric step facets on both crown and pavilion, arranged to create parallel mirror planes that channel light in crisp, repeatable paths, producing pronounced hall of mirrors effects and controlled scintillation. The crown facets are proportioned to balance a substantial table with complementary crown angles, guiding light into the pavilion where the stepped facets on the pavilion walls reflect and return light through the crown with minimal leakage. The near square table supported by parallel bezel and crown facets results in repeated, square facet reflections, while the octagonal outline formed by the truncated corners modulates the break up of flash, producing linear, architectural scintillation rather than scattered pinfire. Optical symmetry is tightly maintained, facet junctions are sharp, and facet alignment is precise, contributing to maximum light play for the given pavilion depth of 3.14 mm relative to the overall dimensions, and the excellent polish enhances facet clarity, reducing diffusion and enabling crisp light return.

Color in this sapphire is classified as intense, a grade that signifies strong saturation while preserving good tone and transparency. The blue hue is manifest across the crown and through the depth, with consistent distribution and minimal zoning thanks to careful orientation during cutting, which is critical in sapphires to align the pleochroic axes for optimal face up color. Madagascar provenance commonly imparts a lively blue with balanced secondary tones, and in this stone the trace element cocktail responsible for hue, principally iron and titanium, manifests as a deep yet bright blue when viewed under standard viewing conditions. Because this sapphire is untreated, the cutter relied entirely on natural color concentration and crystal habit to select cutting angles that maximize perceived color while preserving weight, a technical compromise that yields a gem with intense blue saturation and excellent light performance. The very very slightly included clarity grade, determined at eye level, confirms that inclusions are minor and do not materially interrupt internal light pathways, allowing the faceting geometry to perform without obstruction.

For practical use and setting, the 6.18 x 6.16 x 3.14 mm footprint and 1.12 carat weight position this asscher octagon sapphire as ideal for solitaire rings, three stone compositions, precision bezel settings, and high end jewelry where the architectural faceting can be appreciated. An open style mounting that allows light to enter the pavilion, or a mounting with a minimal bezel to preserve light ingress, will enhance the step facet reflections and maintain the signature hall of mirrors. The near equal length and width ensure an orthogonal sit in most standard asscher oriented settings, and the substantial table provides a strong visual plane for the intense color to present. At The Natural Sapphire Company we document origin and treatment status, and we recommend examination under standardized lighting to appreciate pleochroic shifts and the interaction between facet geometry and color. This sapphire is ideal for the buyer who values cutting technique, natural color, and optical engineering, and we invite knowledgeable buyers to request high resolution detailed imagery, facet maps, and mounting recommendations to confirm how this exceptionally cut, untreated Madagascar blue sapphire will perform in your chosen design.