0.86 Ct. Blue Sapphire from Ceylon (Sri Lanka)

This oval shape blue sapphire presented by The Natural Sapphire Company is a precisely measured 0.86 carat gem, with dimensions of 5.72 by 4.74 by 3.92 millimeters, offering transparent clarity and vivid color intensity. The gem is cut in a mixed brilliant style, combining a faceted brilliant crown with a faceted pavilion that has been optimized to balance scintillation and color saturation, while an excellent polish enhances surface luster and minimizes light leakage. Clarity has been graded as very slightly included, evaluated at eye level, with inclusions that are minimal and do not disrupt the overall transparency or the distribution of color, and the stone has been heat treated, a stable and widely accepted enhancement that deepens tone and reduces undesirable zoning inherent to natural rough. The sapphire originates from Ceylon Sri Lanka, a provenance known for producing highly sought after cornflower and vivid blue tones, and this example exhibits the island provenance through its lively, saturated blue that reads vividly in daylight and remains richly colored under lower color temperature lighting as well.

From a lapidary and faceting perspective, the mixed brilliant execution of this oval sapphire reflects deliberate cutter choices to reconcile weight retention with optical performance, the length to width ratio of approximately 1.21 produces an elegant oval outline that favors symmetry and even light return across the table. The cutter maintained a measured pavilion depth of 3.92 millimeters, which supports internal reflection and maximizes apparent color without deepening the stone so much as to sacrifice face up brilliance, while the crown faceting pattern is tuned to produce lively scintillation and controlled contrast, enhancing the sense of depth that characterizes quality Ceylon stones. The girdle has been finished to provide secure setting retention without excessive thickness, and the facets meet with tight junctions and consistent symmetry, contributing to the excellent polish assessment. Because sapphires exhibit pleochroism, the cutter orientated the pavilion to present the most desirable blue hue in the table view, minimizing visible zoning and aligning inclusions so they remain discreet when viewed face up. These technical decisions resulted in a gem that demonstrates balanced light performance, where the interplay of brightness, contrast, and vivid saturation are all evident, and where the mixed brilliant approach delivers a modern sparkle while preserving the natural color characteristics that collectors value from a Ceylon origin.

The 0.86 carat weight is a central determinant of both rarity and value for this sapphire, sitting close to the important one carat threshold where market demand and per carat prices typically increase, and yet retaining more weight from the rough than a deeper cut of equal appearance would allow, which enhances its investment and design utility. In practical terms, this weight class offers a material premium relative to smaller size categories because fine quality sapphires in vivid color become progressively less common as carat weight rises, so this stone commands a higher per carat consideration than more abundant smaller stones with similar color and clarity. For jewelry design the 0.86 carat oval is highly versatile, lending itself to a classic solitaire mounting where the width and depth will display saturated blue across the table, or to an elevated halo setting where the surrounding accents can amplify perceived size and color contrast without masking the sapphire s intrinsic hue. Provenance from Ceylon combined with the treatment disclosure of heat enhancement positions this gem within a transparent market segment where collectors and connoisseurs can ascribe value based on origin quality and lapidary merit. The Natural Sapphire Company stands behind the gem s description and technical grading details, and we are prepared to provide gemological documentation upon request, along with recommended mounting specifications to preserve the stone s optical characteristics and to maximize its long term value and visual impact.