1.55 Ct. Blue Sapphire from Ceylon (Sri Lanka)

This sapphire is a technically impressive specimen that combines precise proportions with an intensely saturated Ceylon blue, presented by The Natural Sapphire Company. The gemstone weighs 1.55 carat and is fashioned into a classical oval shape with measured dimensions of 7.41 x 5.47 x 4.86 mm. The length to width ratio of approximately 1.35 creates an elegant oval silhouette that is versatile for a wide range of settings. When considered alongside the substantial face up size for a 1.55 carat sapphire, the overall presentation is larger than many stones of comparable weight, because the cutter optimized the outline to maximize visible surface area while maintaining a balanced pavilion depth. The origin is Ceylon Sri Lanka, a source renowned for producing sapphires with lively, saturated blue tones, and this piece sits at the upper end of intensity for its origin with an intense color intensity grade that is apparent in both daylight and incandescent illumination.

The cutting and faceting deserve close attention because they are central to the gem quality and optical performance. The stone is cut in a mixed brilliant cut, which in practice combines the light dispersion and scintillation benefits of brilliant style faceting with the color control and crisp facet junctions typical of modified or step elements on an oval. The cutter has executed a balanced crown and pavilion relationship, producing strong return of light through the table and minimizing light leakage along the girdle. Using the provided dimensions one can calculate an average diameter of 6.44 mm and a depth percentage near 75 percent, indicating a slightly deep pavilion geometry that contributes to concentrated color saturation without creating a closed dark window. The facet alignment and symmetry are crafted to precise angles that favor balanced brilliance and controlled flash, and the excellent polish enhances facet crispness and maximizes reflectivity across the table and crown facets.

Clarity and enhancement history are important technical parameters for discerning buyers and are clearly defined for this sapphire. The clarity is graded as very slightly included evaluated at eye level, which signifies that the stone is essentially clean to unaided inspection with only minor natural features that do not interrupt the visual plane or diminish transparency. Because the crystal structure is transparent and the internal features are limited in size and number, the stone displays clean light return and crisp facet contrast. The sapphire has been heat treated, a conventional and stable enhancement applied to many natural corundum specimens to improve color uniformity and remove silk or other growth related clouds. Heat treatment when performed correctly is permanent under normal wear conditions, and in this example it has been executed to preserve the inherent Ceylon character while intensifying the desirable blue saturation. The excellent polish across all facets reduces surface diffusion of light and supports maximum brilliance and fire for the color present.

From a rarity and comparative perspective this 1.55 carat intense blue oval from Ceylon represents a scarce combination of attributes. Many Sri Lankan sapphires of similar carat weight present paler saturation or higher silk content that diminishes transparency at face up, and many intensely colored stones at this weight are of different origins and present different body tone. The interplay of an intense, evenly distributed blue, a transparent clarity grade at eye level, meticulous mixed brilliant faceting and an elegant oval outline makes this gem rarer relative to the typical market assortment. For practical considerations in design the stone will perform exceptionally in both solitaire and halo settings where the color and brilliance remain the focal point, and the slightly deep pavilion geometry allows jewelers to select mounting strategies that preserve the stone profile while protecting the girdle. The Natural Sapphire Company stands ready to advise on setting options and to provide further technical documentation for buyers who require additional gemological verification or custom mounting services, ensuring that the selection, care and long term value of this fine Ceylon sapphire are fully supported.