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

This exceptionally transparent 1.67 carat cushion shape bi color or parti sapphire measures 7.16 by 5.65 by 4.47 millimeters, and its faceted presentation is designed to maximize optical performance and visual appeal, The mixed brilliant cut combines a brilliant facet arrangement on the crown with complementary pavilion facets, producing a lively balance of brilliance and scintillation, the geometric faceting is carefully proportioned so that each facet plane serves a specific optical role, crown facets disperse incoming light into spectral flashes, the table and bezel facets aid in broad, even light return, and the pavilion facets operate to redirect light back through the crown, the result is an apex of controlled reflection and dispersion that allows the sapphire to exhibit significant light play as the stone moves, the cushion outline provides a soft, elegant silhouette while allowing a generous table to present the parti color zones clearly to the viewer, the gem has excellent polish, which further enhances surface reflection and minimizes light loss at facet junctions, the combination of facet geometry, symmetry and polish is why this stone shows a complex interplay of brilliance, sparkle and subtle color shifts in different lighting conditions.

From a grading perspective this sapphire carries a clarity grade of very slightly included, evaluated at eye level, the inclusions observed are minor, they do not impede transparency significantly, and they are typically visible only upon careful inspection rather than detracting from the gem when set, in practical terms this clarity grade means the sapphire will present with clean visual appeal in most jewelry settings, and the very slightly included grade can actually be a favorable balance for collectors or designers who seek natural character without compromising optical performance, the light color intensity contributes to the gem appearing delicate and refined, rather than saturated, and this lighter intensity makes the bi color characteristics more legible, the stone is transparent and its internal features contribute to the parti effect rather than obscuring it, the gem displays the durable crystal structure expected of corundum, and there is no indication of treatments or enhancements, the lack of enhancement is explicitly noted, this untreated condition is a material advantage for informed buyers, because heat treatment is routine in the market and an untreated sapphire with attractive color and clarity commands a premium for its natural provenance.

The origin of this sapphire is Ceylon, Sri Lanka, a source renowned historically and presently for producing a wide spectrum of sapphire colorations, including the subtle, pastel and parti tones that make this piece noteworthy, Sri Lankan sapphires often crystallize in environments that favor the development of color zoning and pleochroic behavior, these natural growth characteristics can produce the bi color or parti effect, where zones of differing hue are visible as the stone is rotated or viewed from different angles, the skilled cutter of this gem has oriented the pavilion and crown in harmony with the crystal’s optic axes to accentuate the parti phases, by aligning facet geometry with internal color zones the cutter maximizes the visual contrast between the color areas while preserving light return, Ceylon origin also carries a provenance value, the island has long been a center of gem expertise and trade, and collectors familiar with origin distinctions understand that untreated Ceylon sapphires exhibiting clean transparency and natural parti coloring are both rare and desirable, the combination of origin, untreated status, and thoughtful cutting make this sapphire a compelling option for buyers who prioritize natural gemological attributes and verified provenance.

For practical use and appreciation, this sapphire’s cushion shape and measured proportions make it a versatile choice for a variety of settings, the stone’s 7.16 by 5.65 millimeter footprint is well suited to a classic solitaire mount, a halo composition that enhances apparent size, or a bespoke designer piece that showcases the parti characteristic across the table, because the gem is light in color intensity and shows bi color character, an open setting that allows light to enter freely will produce the most dynamic optical effects, the very slightly included clarity grade supports daily wear when set responsibly, and the excellent polish ensures the surface will retain lively reflection under normal conditions, educated buyers will recognize the value inherent in an untreated Ceylon sapphire of this specification, and The Natural Sapphire Company affirms the gemological description provided, we are available to provide additional photographs, viewing under multiple light sources, and any further measurements or documentation required by a discerning purchaser, for collectors and designers seeking a natural, elegantly faceted parti sapphire with optimized geometric faceting and verifiable origin, this 1.67 carat cushion presents a rare opportunity to acquire a stone that balances optical performance, natural character, and provenance.