1.57 Ct. Bi Color Sapphire from Ceylon (Sri Lanka)

This sapphire is a precisely cut, transparent round gem weighing 1.57 carats, with dimensions of 6.92 by 6.75 by 4.64 millimeters, and a mixed brilliant cut designed to optimize both face up brilliance and internal light performance. The material presents as bi color, exhibiting a measured medium intense color intensity that is evenly distributed across the crown and pavilion planes. The clarity has been evaluated at the very very slightly included grade at eye level, and the surface finish carries an excellent polish that produces crisp, well defined facet junctions. The origin of the sapphire is Ceylon Sri Lanka, and the stone has undergone a standard heat treatment to enhance its color and clarity attributes in a stable, permanent manner. The Natural Sapphire Company presents this gem with precise documentation of the technical parameters, enabling an informed assessment of its suitability for a variety of settings.

The mixed brilliant cut merges a round brilliant crown geometry with a pavilion faceting scheme tailored to this material, resulting in a lively interaction between light and color. The facet pattern yields strong central return and a balanced pattern of scintillation toward the girdle, and the excellent polish preserves sharp facet edges and clean reflective planes. Because the gem is transparent and contains only very slight eye level inclusions, light transmits through the crystal structure with minimal interruption, allowing internal reflections to remain coherent and vivid. From oblique viewing angles the cut produces dynamic color zoning, accentuating the bi color nature without creating distracting dark windows or dead zones. The result is a gem that reads as flawless in everyday viewing, and whose symmetry and polish amplify brilliance from every facet and orientation.

Color characteristics are central to this sapphire, and the medium intense tone offers an optimal balance between saturation and lightness for a pleasing face up presence in a variety of mounting styles. The bi color aspect manifests as a subtle transition between cooler blue and slightly warmer violet blue areas when the stone is rotated, a behavior consistent with pleochroic responses often seen in Ceylon sapphires. This optical variability contributes to a lively, three dimensional appearance, because different facet planes present slightly different hues to the observer, creating depth and complexity rather than a flat single tone. At 6.92 by 6.75 millimeters the crown height and pavilion depth combine to deliver a total depth of 4.64 millimeters that is well calibrated for strong color concentration while maintaining appealing spread on the finger, as shown in photographs illustrating the gem in hand. The measured proportions and round outline also make this sapphire highly adaptable to a range of settings, where its clarity and cut will be visible and appreciable in both solitaire and multi stone designs.

Assessment of condition and origin completes the technical profile, and underscores how the gem quality enhances aesthetic performance in practical use. Heat treatment in this case has been carried out to refine the color and diminish minor inclusions, producing a stable and attractive result that is typical of responsibly prepared sapphires. The very very slightly included clarity grade, combined with the excellent polish and careful facet symmetry, means the sapphire presents with minimal distraction to the eye, allowing the observer to experience unbroken planes of color and lively facet reflections. Provenance from Ceylon Sri Lanka contributes to the stone character, as local material frequently displays the balanced saturation and optical richness evident here. The Natural Sapphire Company has prepared this description to convey the precise attributes that determine how the gem performs visually, noting in particular that the interplay of high degree transparency, meticulous cutting, and superior polish is what enhances the stone beauty from every angle, making it a technically sound and visually compelling choice for refined jewelry applications.