1.15 Ct. Bi Color / Parti Sapphire from Africa

This 1.15 carat fancy shape bi color parti sapphire presents a disciplined synthesis of precise geometry and natural color variation, supplied by The Natural Sapphire Company. The gem measures 8.82 x 6.01 x 3.76 millimeters, is transparent, and is faceted using a step cut. The step cut has been executed to retain the integrity of the parti color distribution while producing a controlled interplay of light, and the stone has received a standard heat treatment to enhance color saturation and clarity. Origin is Africa, and the finishing sequence culminates in an excellent polish that preserves crisp facet junctions and a smooth girdle, attributes that are critical when evaluating light return and surface brilliance for precision settings.

The geometric faceting architecture is oriented to maximize light play through planned facet proportions and alignments, the crown facets are shallow enough to admit a broad aperture of light while the table remains proportionally sized to act as a primary window into the pavilion. The pavilion is organized in parallel step tiers, each tier carefully angled to promote total internal reflection across multiple internal pathways, creating alternating bands of broad flashes and linear scintillation as the gem is rotated. Step cuts favor controlled flashes rather than dispersed brilliance, and in this piece the arrangement of elongated kite and trapezoid facets along the pavilion creates long, clean flashes that accentuate the bi color transition. Precision symmetry of facet convergence is evident, minimizing light leakage at facet junctions and enhancing both contrast and the perception of depth within the stone.

Color and clarity are described in technical terms to aid informed evaluation, the sapphire displays medium color intensity with a distinct parti effect, combining zones of yellow and blue in a manner that is balanced rather than patchy. Parti sapphires often exhibit pleochroic behavior, and this gem demonstrates directional changes in hue and saturation, the step faceting amplifies these shifts by presenting large facet planes that capture and refract the differing color components. Clarity is graded very very slightly included, evaluated at eye level, meaning that inclusions are minute and do not materially affect transparency or the engineered light paths through the pavilion. The heat treatment applied is a conventional enhancement that stabilizes color and refines internal silk and microscopic inclusions, improving overall windowing and the stone response to facet architecture without obscuring the natural bi color character.

Craftsmanship and practical considerations are presented for those planning custom settings or technical appraisal, the excellent polish ensures optimal surface reflectivity, the facet edges are straight and well centered, and the girdle thickness is consistent for secure bezel or prong engagement. The step cut geometry makes this sapphire particularly well suited to elongated or shield inspired settings where the linear flashes will coincide with the mounting lines, and the controlled light play will read as crisp bands of color under directional lighting. Weight to dimension ratio is appropriate for the stated 1.15 carat mass, indicating a well balanced pavilion depth that supports both stability and optical performance. When you choose this stone from The Natural Sapphire Company you receive a specimen that has been selected and finished with attention to facet design, color balance, and clarity grading, qualities that appeal to buyers who value technical precision and measured optical effect.