1.35 Ct. Blue Sapphire from Ceylon (Sri Lanka)

This transparent round blue sapphire weighs 1.35 carats, and measures 6.70 by 6.69 by 3.75 mm, presenting near perfect symmetry in diameter and depth. The gem is faceted in a mixed brilliant cut, and it displays an intense blue color with a consistently saturated tone across the table and crown. The clarity grade is slightly included, evaluated at eye level, and the stone benefits from excellent polish which enhances surface luster and the crispness of facet junctions. Origin is Ceylon Sri Lanka, and the sapphire has been heat treated, a standard and stable enhancement that improves color uniformity and optical performance without diminishing the natural character of the crystal. The combination of weight, proportions, origin, and finishing yields a sapphire that is both visually appealing and technically well executed.

The mixed brilliant geometry is the primary reason this sapphire exhibits strong light return and lively optical behavior. The cutting style pairs a brilliant faceted crown with a pavilion that incorporates step influenced facets, creating a dialogue between intense, scintillating flashes and deeper, more controlled zones of color. The crown facets act as light collectors, breaking incoming light into numerous small flashes that deliver immediate brilliance. The pavilion facets, shaped and angled to precise proportions, control the path of that light back through the table, reinforcing color saturation and creating a layered sense of depth. Because the stone is essentially round, with nearly identical diameter measurements, the facet pattern presents with balanced radial symmetry, so reflections are evenly distributed rather than concentrated unevenly. This symmetry, together with the excellent polish, allows the sapphire to show maximum light play in a range of lighting conditions, from bright daylight to softer indoor illumination. Slight inclusions, present at eye level, are internal characteristics that do not interrupt overall light performance, rather they can contribute to subtle contrast that enhances the perception of movement within the gem.

In practical terms the sapphire offers versatility for settings that benefit from both brilliance and perceived depth. Its 1.35 carat weight and 6.70 mm diameter make it suitable for classic solitaire rings, three stone layouts, or as a striking center in a delicate halo where the intense blue will read clearly against white metals. The mixed brilliant cut responds well to bezel or prong settings, with prongs allowing more light into the crown for increased sparkle, and bezel settings offering secure protection while still permitting appreciable light play when executed with careful metal finishing. Given the heat treatment, routine care involves gentle cleaning with warm soapy water and a soft brush, avoiding harsh chemicals and ultrasonic machines if inclusions are of a type that could be affected by strong vibrations. Provenance from Ceylon Sri Lanka is noted for producing sapphires with lively, vivid blues that retain a natural brightness, and this specimen exemplifies that regional character, while the cutting and polish articulate the stone architecture that allows the color to come alive. For further information on this sapphire, and for secure presentation options, The Natural Sapphire Company can provide detailed imagery, mounting recommendations, and appraisal documentation upon request.