0.59 Ct. Blue Sapphire from Ceylon (Sri Lanka)

This sapphire is a transparent, pear shaped blue sapphire weighing 0.59 carats, with exact dimensions of 6.62 by 4.74 by 2.79 millimeters. It is faceted in a mixed brilliant cut, offering a balanced arrangement of facets intended to optimize both light return and color depth. The stone carries a clarity grade of very slightly included, evaluated at eye level, and an intense color intensity that yields a vivid, saturated blue. The surface finish is graded excellent polish, and the stone has undergone standard heat treatment, a widely accepted and stable enhancement. The sapphire’s origin is Ceylon, Sri Lanka, a source long recognized for producing blue sapphires with lively tone and transparent crystalline quality. The measured depth proportion of approximately 49 percent reflects cutter decisions aimed at reconciling brilliance, face-up size, and color concentration appropriate to the pear shape and the stone’s dimensions.

The mixed brilliant cut employed on this sapphire is central to its visual performance, and it explains much of why its brilliance stands out when compared with more common gemstones. Compared with diamond, which has a significantly higher refractive index and correspondingly stronger electrical dispersion, sapphire’s refractive index is lower, so it will not exhibit the same level of fire or scintillation intensity as a diamond of comparable size and finish. However, because this sapphire combines brilliant-style facets with carefully proportioned step elements, it achieves an efficient return of light across a wide range of viewing angles. Against other popular colored stones such as blue topaz or aquamarine, which often present lighter tones and less saturation, this sapphire’s intense color works in concert with the cut to create a sense of depth and lively internal reflection that often appears more substantial and luminous. When compared with spinel, which can approach corundum in optical performance but typically has a slightly lower refractive index, this sapphire benefits from corundum’s higher density and stronger luster, yielding a presence that reads as both bright and richly colored.

Color, clarity, and durability together define how a colored gemstone is perceived in everyday use, and this sapphire performs strongly on each point. The intense blue saturation is characteristic of quality Ceylon material, providing a vivid but not overly dark face-up appearance, which helps preserve scintillation from the mixed brilliant faceting. The clarity described as very slightly included at eye level indicates that any internal features are minimal and do not materially interrupt the stone’s transparency or light passage, maintaining an even and consistent color field across the table and crown. From a wearability perspective, corundum’s Mohs hardness of 9 makes this sapphire well suited to daily jewelry, resisting abrasion significantly better than more common gems such as quartz or topaz, and far exceeding emerald in toughness and stable transparency. The documented heat treatment is a conventional, permanent enhancement used to optimize hue and reduce color zoning, and it is recognized and accepted throughout the trade when fully disclosed.

Practical considerations for setting and ownership are straightforward based on the stone’s dimensions and optical behavior. At 6.62 by 4.74 millimeters, and with a balanced depth, this 0.59 carat pear shape is suitable as a center stone in a fine ring, an asymmetric pendant where the pear profile can accentuate line and motion, or as a focal accent in multi-stone designs that require strong color presence without excessive weight. The mixed brilliant cut favors settings that preserve the crown and table to allow maximum light entry, and the excellent polish will contribute to prolonged surface luster with routine care. Full disclosure of origin and enhancement is provided in keeping with industry practice, and The Natural Sapphire Company stands behind the stated attributes, offering documentation and guidance on mounting and care. This sapphire’s combination of transparent clarity, intense Ceylon blue, skilled mixed brilliant cutting, and robust physical characteristics makes it a distinguished choice among commonly encountered gemstones, delivering a balance of color depth and optical vitality that remains consistently attractive in both controlled viewing and everyday wear.