1.90 Ct. Yellowish Green Cabochon Chrysoberyl from Ceylon (Sri Lanka)

This specimen is a translucent oval yellowish green chrysoberyl weighing 1.90 carat, with dimensions 7.82 by 6.52 by 3.63 mm, cut as a cabochon and originating from Ceylon Sri Lanka. The cutter has preserved an even, symmetrical outline and controlled dome height to present a classic oval cabochon silhouette. Color is described as medium intensity yellowish green, distributed evenly across the tableless dome, and clarity is graded as very slightly included when examined at eye level. No enhancements have been applied, and the finish is of excellent polish, resulting in a smooth, reflective surface that supports both wearable stability and optical performance. The Natural Gemstone Company offers this piece as an unenhanced natural example of chrysoberyl with provenance from one of the world regions most respected for gem quality material.

Although this gem is fashioned as a cabochon rather than a traditional faceted stone, the term geometric faceting describes the intentional geometry and micro shaping of the dome and the stone perimeter that together maximize internal light play. The cutter optimized the dome radius and apex position to favor guided internal reflection across the longer oval axis, and this geometry concentrates transmitted light toward the viewer while preserving the stone's translucency. Chrysoberyl has a relatively high refractive index around 1.745 to 1.754, which increases contrast between inclusion features and host material, and when combined with a controlled cabochon curvature the result is an intensified luminous band and lively schematics of light. The oval proportions roughly 1.2 to 1 length to width ratio support an elegant chatoyant band when oriented correctly, and the deliberate alignment of inclusion textures parallel to the long axis enhances a single sharp eye like phenomenon under directional lighting. In practice this means the stone will exhibit concentrated light return with a linear sheen that traverses the dome, maximized by the cutter setting the dome height to a ratio that balances surface reflection against optical depth.

From a craftsmanship perspective the excellent polish is critical in a cabochon, because surface integrity directly affects contrast and the perceived sharpness of any light band. Micro finishing techniques were applied to remove tool marks and to produce a uniform specular highlight, improving apparent translucency. The very slightly included clarity grade indicates the presence of minor natural features, likely needle like or lamellar inclusions that are typical in Ceylon chrysoberyl, but these are positioned such that they act as optical planes rather than detractors, reinforcing the chatoyancy rather than scattering light randomly. The internal architecture of the inclusions coupled with the cabochon geometry produces constructive interaction with incident light, yielding a clean luminous stripe and a soft overall glow in diffused lighting. The absence of enhancement guarantees that the refractive and absorption properties are natural, important for collectors attentive to primary gem optics and long term stability.

Practical mounting considerations enhance the stone's optical performance, installers should set the oval cabochon with its long axis aligned to the expected dominant light source for best chatoyancy, a low bezel that does not clamp the dome can preserve light entry around the girdle, and an open back or light assisted setting can increase perceived depth. Given its 3.63 mm height, the cabochon sits well for rings and pendants where dome curvature remains proportional to finger or chest plane. For clients and designers requiring technical assurance, The Natural Gemstone Company provides measured dimensions, the natural origin statement, and our assessment of clarity and polish so that the gem can be integrated into precision settings. This chrysoberyl represents a technical interplay of natural inclusion structure, cutter geometry, and surface finish, producing a stone that maximizes light play while remaining faithful to its Ceylon provenance.