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

This 0.90 carat cushion shape bi color parti sapphire presents as a transparent gem with precise dimensions of 6.28 x 4.69 x 3.37 mm, and a measured overall depth that corresponds to approximately 61.5 percent of its average diameter. The mixed brilliant faceting has been executed to emphasize both internal light return and even color distribution, producing controlled scintillation rather than a single overpowering flash. The stone displays medium color intensity, and the parti character is articulated through facet angles and plane orientations that allow alternating zones of hue to appear under different lighting directions, which enhances its visual complexity without sacrificing transparency. Clarity is graded as slightly included when evaluated at eye level, and these internal features have been strategically positioned relative to the pavilion facets to minimize distraction and to act as additional light conduits in certain viewing orientations. The excellent polish on all facet planes produces crisp facet junctions and mirror like surfaces that maximize specular reflection, while the absence of any enhancement treatments preserves the natural interaction between trace element absorption and light transmission inherent to Ceylon origin sapphires.

The mixed brilliant cut design on this cushion shape integrates a compact brilliant facet architecture with modified larger facets to control both brilliance and color saturation. The cutter balanced table size against crown height to create a moderate table that permits a pleasing crown sparkle, while the pavilion geometry is configured to return light efficiently through the crown facets, enhancing perceived brightness and scintillation. Facet proportions favor a controlled number of pavilion facets that produce multiple internal reflections before light exits through the crown, increasing the perceived life of the gem. At the same time, slightly larger crown facets serve to break up color zonation into lively flashes, which is particularly advantageous for parti sapphires where the goal is to exhibit discrete color areas without losing overall harmony. The result is a gem that exhibits strong contrast of light and dark facet patterns, which emphasizes both the surface glitter and the deeper body color, a visual outcome that technical buyers will recognize as the product of careful proportioning and facet alignment.

Craftsmanship details are evident in the uniform girdle thickness, even symmetry of the cushion outline, and the meticulous execution of facet junctions that yield consistent facet meet points across the crown and pavilion. These attributes are important for practical settings, because an even girdle and predictable pavilion depth simplify secure bezel or prong mounting, and the stone will sit true in a tailor made mount. The sapphire originates from Ceylon Sri Lanka, a provenance known for producing transparent material with pastel and medium intensity tones, and its untreated status makes it desirable for collectors and designers seeking natural material characteristics. For clients of The Natural Sapphire Company who value technical specifications and refined lapidary technique, this stone is offered with full dimensional data, a clear statement of its slightly included clarity grade at eye level, and an emphasis on the cutter decisions that yield superior light performance. The combination of thoughtful mixed brilliant faceting, excellent polish, and natural Ceylon color makes this cushion bi color parti sapphire an exemplary choice for commission pieces and for buyers who appreciate the interplay of proportion, facet engineering, and unenhanced material quality.