1.85 Ct. Blue Sapphire from Ceylon (Sri Lanka)

This sapphire is a precisely measured 1.85 carat round gem, with dimensions of 7.45 by 7.39 by 4.10 millimeters, presenting a near perfect circular outline and an overall depth that is approximately fifty five percent of the average diameter. The cutting style is a mixed brilliant cut, executed to combine the energetic return of a brilliant crown with a controlled pavilion geometry that preserves weight while maximizing light performance. The stone has an intense color intensity and a transparency that reads as transparent under direct examination. Clarity is graded as very slightly included evaluated at eye level, which in practice means minimal internal features that do not detract from visual performance to the naked eye, and an excellent polish that yields clean facet reflections and a bright surface finish. The piece is heat treated, a stable and standard enhancement for sapphires, and its origin is Ceylon Sri Lanka, a source known for vivid and lively blue material. This sapphire is offered through The Natural Sapphire Company with full disclosure of treatment and origin.

The mixed brilliant faceting on this round sapphire is the principal factor in its optical behavior. The cutter has balanced crown facet angles with a proportionate table plane to create controlled contrast and scintillation, while the pavilion facets have been adjusted to optimize return into the crown face and to deepen the perceived color without inducing darkness. The result is a dynamic interplay between broad flashes of color and tight scintillation that animate the stone as it is rotated. Facet junctions are crisp and consistent, and symmetry is precise enough that the round outline reads evenly under loupe and naked eye viewing. The relatively shallow pavilion compared to deeper, heavier cuts retains more weight but has been compensated for by subtle pavilion angling so that light is refracted back through the table and crown facets rather than lost through excessive leakage. Excellent polish across each facet ensures that internal reflections are clean and that surface light scatter is minimal, enhancing perceived luster and giving the stone a polished, gemological finish.

Color and clarity interact in this sapphire to produce its refined visual appeal. The hue is a pure to slightly violet biased blue, consistent with high quality Ceylon material, and the intense color intensity translates into a saturated yet lively appearance under both natural daylight and artificial lighting. Because corundum has a relatively high refractive index combined with a low dispersion, color in sapphire is conveyed through chroma and saturation more so than through fire, and this stone exemplifies that relationship. The transparency permits deep color saturation without the visual muddiness that can occur in heavily included material. Inclusions are described as very slightly included evaluated at eye level, which typically means fine needle inclusions or minute crystals that may be visible under close scrutiny but do not interrupt the overall color field or brilliance. The heat treatment has stabilized the color and in many cases has reduced the visibility of silk or rutile inclusions, making the tone more even and the eye clarity more appreciable. From a gemological standpoint the combination of intense color, high transparency, and minimal inclusions yields an optical balance that reads as visually clean and chromatically rich.

From the perspective of setting, wearability, and long term performance this round mixed brilliant sapphire is exceptionally versatile. The near round outline and its standard millimeter dimensions are readily accommodated by classic four or six prong settings, low profile bezels, and pavé halo designs, and its thickness combined with the mixed cut provides good table security when set in precision prongs. The excellent polish and facet symmetry mean that the stone will exhibit consistent scintillation and color balance when mounted, and the fine clarity minimizes the risk that inclusions will concentrate light leakage at specific angles. Corundum hardness gives it considerable abrasion resistance and makes it suitable for daily wear in rings and other jewelry, while the permanent nature of heat treatment ensures the color stability of the piece under normal conditions. When viewed in all lighting conditions the sapphire demonstrates balanced return from crown and pavilion, even color distribution across the table, and lively internal reflections that accentuate both brilliance and saturation. The Natural Sapphire Company presents this gem as an example of how careful cutting, responsible enhancement, and quality source material from Ceylon Sri Lanka coalesce to produce a sapphire whose aesthetic is simultaneously technical and emotional.

In summary this 1.85 carat round mixed brilliant sapphire combines precise measurements, considered faceting, and strong material quality to create a gem that appears flawless in practical viewing and that retains exceptional beauty from every angle. The interplay of intense color intensity, very slight inclusions evaluated at eye level, and an excellent polish results in a stone that offers both the depth and the sparkle buyers seek, while the mixed brilliant cut provides a controlled brilliance that complements the vivid blue body color. Its proportions and finish are engineered to maximize light return and to present a uniform color field in mounted applications. For buyers who value technical refinement and artisanal cutting along with documented treatment and origin, this stone represents a balanced and durable option. The Natural Sapphire Company is available to provide additional images, magnified reports, and setting recommendations to ensure the stone performs optimally in the chosen jewelry design.