1.06 Ct. Yellow Sapphire from Ceylon (Sri Lanka)

This transparent yellow sapphire weighs 1.06 carats, and it measures 6.78 by 5.65 by 3.58 millimeters, a profile that yields a depth of approximately fifty eight percent. The gem is a fancy shape executed in a mixed brilliant cut, combining a faceted, brilliant style crown with a faceted pavilion that emphasizes controlled light return and contrast. Clarity has been graded as very slightly included when evaluated at eye level, and significant inclusions are absent from typical face up viewpoints, allowing excellent light behavior through the body of the stone. Color is light in intensity, presenting an even, delicate yellow that is characteristic of select Ceylon material, and the piece is natural with no enhancement. Surface finish is excellent polish, the facet planes are crisply executed, and facet junctions exhibit tight meeting lines that minimize light leakage at the surface.

The mixed brilliant execution on this fancy shape has been cut to balance white light return and color saturation. The crown receives a series of small, well proportioned triangular and kite shaped facets that maximize scintillation and return of white light, while the pavilion facets are arranged to produce controlled internal reflections that deepen the yellow without producing an overly dark appearance. The combination of facet angles and pavilion depth in this example was chosen to respect corundum optical properties, allowing the high refractive index of sapphire to produce lively brilliance without excessive windowing. Facet symmetry and polish quality are critical for mixed cuts, and the excellent polish on this stone ensures crisp reflective planes and strong facet contrast, which translates into distinct flashes of light when the stone is tilted under directional illumination.

From an optical standpoint this Ceylon yellow sapphire compares favorably to other yellow gemstones and to other sapphires within its category. Corundum has a refractive index in the range associated with strong internal reflection, which gives this sapphire greater brilliance than typical yellow quartz and beryl varieties, such as citrine and heliodor, which sit at much lower refractive indices. The dispersion or fire of sapphire is modest relative to diamond, and as a result this stone emphasizes white light return and scintillation rather than pronounced spectral flashes. Compared with step cut yellow sapphires, which prioritize color and a large lucid window, the mixed brilliant cut used here enhances life and sparkle, making the stone appear more dynamic in everyday wear. Compared with yellow topaz, which can show strong color but has lower hardness and different light behavior, this sapphire offers superior surface retention and a more persistent, lively facet play due to corundum toughness and polishing response.

The lack of enhancement is a defining commercial and gemological attribute for discerning buyers. Heat treatment in sapphire can improve color and clarity by altering internal silk or rutile networks, but an untreated Ceylon sapphire with a natural light yellow hue retains original zoning and character from the crystal, which is appreciated by collectors and connoisseurs. In terms of practical handling and jewelry design, the one point zero six carat weight and the dimensions of this fancy shape make it an excellent candidate for a precise solitaire mounting, a halo design that will benefit from the stone s lively crown reflections, or a three stone setting where pairing with smaller accent gems will accentuate its color. The sapphire s Mohs hardness of nine and excellent polish make it suitable for daily wear pieces, and the robust corundum structure combined with good facet junctions reduces the risk of chipping in typical settings.

This gem is offered by The Natural Sapphire Company, and it represents a classic example of fine Ceylon origin material, where geological conditions impart subtle, crystalline yellow tones. For buyers focused on optical performance, the mixed brilliant faceting on this fancy shaped, untreated stone provides a balanced presentation of color and scintillation that stands apart from step cut or heavily windowed examples. For further technical information, including detailed facet maps, light performance imagery, and verification of origin and enhancement status, please contact The Natural Sapphire Company for lab documentation and viewing options.