4.61 Ct. Blue Sapphire from Ceylon (Sri Lanka)

This Bellerophon certified, vivid blue, 4.61 carat, oval shaped sapphire measures 10.57 x 8.70 x 6.40 mm, and presents as a transparent, eye clean example of Ceylon origin, Sri Lanka. The stone exhibits intense color intensity, a highly saturated vivid blue tone, and an excellent polish that together maximize color saturation and light return. Clarity is graded as eye clean when evaluated at eye level, which means no inclusions interrupt the visual plane for the wearer, allowing the stone to function as a bold visual anchor in any setting. Enhancement is heat treated, consistent with trade practice for Ceylon sapphires, and the treatment is stable and permanent under normal wear conditions. The Bellerophon certification confirms origin and treatment notes, and The Natural Sapphire Company offers this documentation to support both aesthetic and investment considerations.

Cutting details are oriented around a mixed brilliant configuration, combining a modified brilliant crown with a faceted pavilion that employs step influenced facets to control color distribution and scintillation. The mixed brilliant layout in this oval utilizes multiple crown facets to open the stone, increasing apparent size and face up brightness, while the pavilion facet architecture is tuned to return the vivid blue to the table with controlled flashes rather than broad dark areas. Proportions are optimized for balance, with a measured depth of 6.40 mm producing a depth percentage of approximately 66.5 percent relative to the average of the length and width, a proportion that preserves both color saturation and lively light performance. The excellent polish reduces surface diffusion of light, so facet junctions remain crisp, and the faceting symmetry maintains even light dispersion across the table and along the girdle, which is finished to a consistent thickness to facilitate secure setting without sacrificing optical performance.

Because of its combination of weight, surface dimensions, and eye clean clarity, this sapphire is exceptionally well suited to a statement piece. At 4.61 carats and a face up size of over 10 mm on the long axis, the gem reads as a dominant focal point in rings, pendants, and brooch designs, while the eye clean clarity ensures an unbroken, luminous field of color when viewed at normal conversational distances. For ring settings, open backed galleries or low profile prong settings will allow light to enter and enhance the vivid blue, while bezel settings can be considered for wearers seeking increased protection, noting that a full bezel will subtly deepen perceived color. Metal choice will influence white light contrast and perceived temperature, with platinum and 18 karat white gold offering a cooler presentation, and 18 karat yellow or rose gold warming the presentation and accentuating the stone’s saturation.

From a craftsmanship standpoint, the stone’s mixed brilliant cutting requires precise lap control during the polishing stages to maintain facet angles and meet the excellent polish grade. The stability of heat treatment means the stone responds well to standard engraving and setting procedures, but we recommend experienced setters who can account for the oval outline and the stone’s specific girdle thickness. Routine care involves gentle cleaning with warm soapy water and a soft brush, avoiding steam and ultrasonic exposure if the mounting or setting contains other treated materials, and periodic prong checks to maintain security. The Natural Sapphire Company provides the Bellerophon certificate with the stone and offers bespoke mounting consultations to ensure the final jewelry piece leverages the sapphire’s size, color, and clarity to maximum effect, creating a statement that is both technically refined and visually arresting.