1.58 Ct. Yellow Sapphire from Ceylon (Sri Lanka)

This oval shape yellow sapphire weighs 1.58 carats, with precise dimensions of 8.28 millimeters by 5.96 millimeters by 3.85 millimeters, and exhibits a high degree of transparency. The gem is cut in a mixed brilliant style, which combines brilliant facets on the crown with carefully arranged facets on the pavilion to optimize both brilliance and color performance. Origin is Ceylon Sri Lanka, a provenance renowned for producing sapphires with lively tone and excellent clarity, and this piece has been heat treated to improve color uniformity and reduce rutile inclusions, a standard enhancement that is stable under normal wear and maintenance. Evaluated at eye level the clarity is classified as very slightly included, allowing the stone to present strong visual cleanliness while retaining natural characteristics that confirm its authenticity. The polish is excellent, producing crisp facet junctions and a bright surface luster that immediately conveys quality craftsmanship.

The mixed brilliant cut of this sapphire is engineered to balance light return and color distribution, with a crown configuration that maximizes scintillation and a pavilion arrangement that directs light back through the table to enhance perceived color. Measured depth relative to the average of length and width yields an approximate depth percentage of 54 percent, a proportion that supports efficient light performance without sacrificing face up spread. The oval outline, with its ratio of length to width, provides an elegant elongation that increases apparent size on the finger while maintaining even color saturation across the face. Facet finishing adheres to strict tolerances, with symmetrical girdle thickness and uniform facet junctions, contributing to predictable optical behavior and strong durability in set jewelry. Excellent polish reduces light scattering at the surface, enabling the mixed facet architecture to function at its intended optical efficiency and to reveal the sapphires internal characteristics with clarity.

Color and clarity interplay to define the gem's visual character, and this sample presents a light color intensity in the yellow range, offering a fresh sunny appearance that is both versatile and refined. In gemological terms the stone displays a well controlled hue and modest saturation, which can render very attractively in both white metal and warm gold settings, allowing designers to emphasize either contrast or tonal harmony. The very slightly included clarity grade evaluated at eye level indicates that inclusions are minimal and do not disrupt transparency, with any internal features being small and generally positioned so as not to affect structural integrity. Heat treatment was applied to enhance color distribution and to diminish the visibility of fine silk, a practice that is widely accepted in the trade and which yields stable results when the piece is used and maintained responsibly. Origin from Ceylon contributes to the gemological profile, as Sri Lankan sapphires often show clean, lively tones with a natural brightness that is prized by connoisseurs.

Long term preservation of the stones natural beauty is supported by its inherent material properties and by considered setting and care. As a corundum, sapphire registers a Mohs scale rating of nine, providing excellent resistance to abrasion and making it well suited for daily wear, while the excellent polish and robust facet junctions will retain crispness under normal conditions. For protection of the girdle and to minimize the chance of impact on the culet, traditional prong settings with reinforced gallery or a low profile bezel are recommended, depending on the desired aesthetic. Cleaning is straightforward, warm soapy water and a soft brush will maintain surface cleanliness and restore luster, while heat treated sapphires are stable enough to tolerate professional ultrasonic and steam cleaning in most cases, although any stone with excessive inclusions should be assessed individually before aggressive cleaning. At The Natural Sapphire Company we provide full documentation of origin, enhancement, and measurements, and we stand behind the craftsmanship of this 1.58 carat Ceylon yellow sapphire, a gem whose balanced proportions, refined faceting, and natural color will continue to captivate over the years as it reflects light and pairs with design choices that highlight its enduring elegance.