1.45 Ct. Blue Sapphire from Ceylon (Sri Lanka)

This 1.45 carat oval blue sapphire from Ceylon is a technically compelling example of material and workmanship aligned to maximize face up presence and gemstone performance. The stone measures 7.64 by 6.30 by 3.82 millimeters, producing a length to width ratio of approximately 1.21 to 1, a proportion that reads as a balanced oval with a classic, compact silhouette. Depth is approximately 3.82 millimeters relative to an average dimension of 6.97 millimeters, yielding a depth proportion near 55 percent, a profile that optimizes the balance between face up spread and light return. The mixed brilliant faceting, applied with an excellent polish, presents a crisp crown facet architecture for scintillation, and a pavilion design that preserves color saturation while returning light efficiently. Clarity is graded as very slightly included when evaluated at eye level, the inclusions are minimal and do not interrupt the transparent body tone, and the absence of enhancement preserves the natural lattice and original color chemistry characteristic of fine Ceylon stones.

Weight is the defining economic and aesthetic attribute of this sapphire, and the 1.45 carat measure places this gem in a decisive value tier. In corundum, visual rarity and market value do not scale linearly with carat, the price per carat typically increases as stones move beyond conventional weight thresholds, and the region above one carat is where availability declines and demand intensifies. A 1.45 carat sapphire therefore commands a premium for two reasons, one technical, the perceptible increase in presence when set, and one market driven, the relative scarcity of unheated, intensely colored Ceylon material in this size with a clean eye level appearance. The compact dimensions achieve a substantial face up diameter without sacrificing pavilion depth, an efficient use of rough that indicates careful preforming and skilled cutting. For connoisseurs and investors alike the combination of this weight, natural color intensity, and unenhanced origin produces a value proposition that is both immediate to the eye and enduring in the market.

From a cutting and performance perspective this oval has been executed as a mixed brilliant, combining a well proportioned brilliant cut crown with a modified pavilion that moderates color saturation and improves internal light dynamics. The crown facets are arranged to deliver lively scintillation across the table and upper facets, while the pavilion facet angles, calibrated to the stone density and depth, control internal reflection paths and return the saturated Ceylon blue to the viewer. The excellent polish is evident in crisp facet junctions and even facet windows, which contribute to both contrast and the perception of clarity. Very slightly included at eye level indicates inclusions that are not systemic to the light return pathways, commonly isolated pinpoints or minor crystals, and in the context of an unheated stone they are often considered evidence of natural origin rather than detracting features. The intense color intensity reported combines hue, tone, and saturation in a way that reads as vivid blue to the eye, and because pleochroism in corundum can reveal different blue intensities from different directions, the oval proportions and mixed cut are chosen to present the most attractive face up hue in typical ring orientations.

Practical considerations for setting and for long term retention of value follow directly from the physical and gemological attributes. At 1.45 carats this sapphire sits in a preferred weight class for center stones, substantial enough to anchor classic engagement ring designs while remaining versatile for calibrated settings in bespoke jewelry. The proportions and pavilion depth allow secure prong setting with adequate head clearance, while a bezel can emphasize the saturated color and offer additional protection for everyday wear. The fact that this sapphire is unheated and from Ceylon enhances collectability and market desirability, provenance that customers of The Natural Sapphire Company seek for investment grade pieces. For buyers who prioritize technical excellence, the combination of precise dimensions, mixed brilliant faceting, excellent polish, very slightly included clarity at eye level, and the lack of enhancement make this 1.45 carat Ceylon sapphire a rare and technically superior option, suitable for high end jewelry where weight, optical performance, and natural origin together determine lasting value.