3.52 Ct. Blue Sapphire from Ceylon (Sri Lanka)

This specimen is a transparent 3.52 carat oval shape blue sapphire, with precise dimensions of 9.67 by 7.74 by 5.53 mm, originating from Ceylon Sri Lanka. The stone has been cut in a mixed brilliant style, combining a brilliant cut crown with a faceted pavilion, producing a strong interplay between scintillation and depth of color. Clarity is graded as eye clean at standard viewing distance, allowing uninterrupted transmission of light through the table and crown, and the polish is excellent, delivering crisp facet junctions and bright, mirror like facet surfaces. The sapphire has been heat treated to optimize color and clarity, a common and accepted enhancement in quality Sri Lankan material, and the piece is presented and guaranteed by The Natural Sapphire Company.

The geometric faceting strategy employed in this mixed brilliant oval is engineered to maximize light return and to enhance the vivid blue saturation. On the crown the cutter has preserved a well proportioned table coupled with layered star and upper girdle facets that act to disperse incident light into multiple internal reflections. On the pavilion the faceting moves beyond a simple brilliant pattern into a controlled tiering of facets that create quasi step like rows, each plane set to capture and redirect light along the long axis of the oval. These coordinated facet planes increase the number of internal reflection events before light exits through the crown, producing increased brightness and a lively scintillation pattern across the face of the gem. Facet symmetry and consistent facet angles are evident, and the overall geometry reduces light leakage toward the girdle, enhancing apparent depth and maintaining the stone as visually saturated from multiple viewing directions.

Color is a primary attribute of this sapphire, and it reads as vivid in intensity with a pure blue hue that is characteristic of high quality Ceylon material. The color displays evenness across the table and through the pavilion when examined in natural and controlled light sources, with minimal zoning and no notable color banding. Sri Lankan sapphires often exhibit a lively, slightly electric blue, and this example demonstrates that regional character while remaining highly wearable in jewelry due to its transparency and eye clean clarity. Pleochroism, a trait inherent to corundum, is present in a subtle form here, contributing to the gem appearing more saturated when viewed along certain orientations, a desirable feature that adds liveliness to movement. Heat treatment in this case has been used to stabilize and intensify the blue, reducing silk inclusions and improving clarity without significantly altering the natural character of the material, a technique routinely applied to Ceylon sapphires to bring forth their optimum beauty.

From a practical and design standpoint this 3.52 carat oval sapphire balances visual size with wearable proportions, and its dimensions and pavilion depth make it suitable for a range of settings that aim to emphasize the geometric faceting and color. A four or six prong setting will allow maximum exposure to light and will show off the scintillation pattern, while a low profile bezel can be considered when additional protection is desired, noting that bezel settings will slightly reduce direct light entry and therefore alter perceived brilliance. The excellent polish and consistent facet junctions make the stone a strong candidate for center stone applications in rings and pendants, and the durable hardness of corundum makes it suitable for daily wear with normal care. All aspects of this sapphire are documented and available through The Natural Sapphire Company, and we can provide guidance on orientation and mounting to preserve the designed light performance. For clients who appreciate technical craftsmanship and optical engineering in gemstones, this mixed brilliant Ceylon sapphire is an instructive example of how geometric faceting, precise proportions, and considered heat enhancement coalesce to produce maximum light play and enduring color.