3.11 Ct. Blue Sapphire from Ceylon (Sri Lanka)

This specimen is a transparent 3.11 carat oval shape blue sapphire, with precise dimensions of 9.70 x 7.83 x 5.29 mm, originating from Ceylon Sri Lanka. It has been faceted to a mixed brilliant style, presenting a harmonious interplay between large, well proportioned crown facets and a pavilion configuration designed to maximize return of light, and it carries a clarity grade of very very slightly included when evaluated at eye level, rendering it effectively eye clean in face up viewing. The color is described as vivid in intensity, showing saturated blue tones with lively brightness and excellent polish across all facet junctions, which contributes to crisp facet definition and strong light return. Enhancement is by heat treatment, a stable and widely accepted process that refines color without introducing fillers or surface residue, and the physical measurements correspond to a length to width ratio of approximately one point two four and a depth that is approximately sixty point three per cent relative to its average diameter, dimensions that favor balanced optics and classical oval proportions.

From a cutting and optical standpoint this mixed brilliant oval offers specific advantages for custom jewelry conversion, because the crown pavilion relationship and facet geometry produce both scintillation and broad field color, characteristics that designers can exploit in a variety of settings. The mixed brilliant cut retains weight where it matters, with pavilion faceting tailored to control light leakage and enhance apparent size, while the excellent polish ensures minimal light obstruction at facet edges. The very very slightly included clarity grade means that inclusions are minor and do not interfere with faceting symmetry, permitting closer spacing of pavillion facets and enabling a tighter, more precise girdle if the design requires it. Because the stone is heat treated and chemically stable, it tolerates standard setting processes used in traditional and contemporary jewelry fabrication, including prong setting, bezel work, and pavé shoulders, while its Mohs hardness of nine makes it appropriate for daily wear pieces such as engagement rings and bracelets where durability is essential.

Customization options for this sapphire are extensive, and The Natural Sapphire Company can translate its optical and physical attributes into multiple finished designs depending on client priorities for style and wearability. For a centerpiece engagement ring a classic four or six prong solitaire will emphasize the vivid color and allow maximum light to enter from the crown, whereas a low profile bezel will protect the girdle and suit an active lifestyle. Adding a single halo of fine melee stones will increase perceived diameter and enhance contrast, while a double halo or graduated baguette shoulders will create a more architectural statement. For a modern interpretation consider an east west orientation in a three stone mount, or a tension style if a seamless, floating effect is desired, noting that tension settings require precise girdle uniformity and a specialist setter. Metal choices influence perceived color, for example white metals underscore cooler blue tones and emphasize brilliance, yellow and rose gold warm the overall look and can deepen perceived saturation, and platinum offers long term stability for high wear items. Practical considerations such as prong thickness, crown height, and pavilion clearance are all influenced by the stone depth and length to width ratio, and our workshop can provide CAD visuals and prototype mockups to confirm proportions before fabrication. Routine care is straightforward for a heat treated sapphire, it tolerates standard cleaning methods used for corundum, and we recommend professional inspection of prongs and settings at regular intervals to ensure long term security. For clients seeking bespoke settings or matching pieces, The Natural Sapphire Company offers design consultation and technical guidance to translate this 3.11 carat Ceylon blue sapphire into rings, pendants, earrings, or cufflinks that preserve the stone s optical performance and durability while achieving the intended aesthetic.