2.91 Ct. Blue Cabochon Sapphire from Ceylon (Sri Lanka)

This item is a single semi translucent blue sapphire weighing 2.91 carats, presented in an oval outline with dimensions of 8.57 by 7.02 by 4.84 millimeters, cut as a traditional cabochon with a smooth domed crown and a well formed base. The gem exhibits a vivid color intensity, and an overall clarity grade described as very slightly included, evaluated at eye level. The surface finish is of excellent polish, lending the dome a bright, reflective luster. The stone has undergone a standard heat treatment enhancement, which is disclosed and stable, and its stated origin is Ceylon, Sri Lanka, a locality historically noted for producing richly colored blue sapphires with a distinctive depth of tone. The Natural Sapphire Company presents this sapphire with attention to the material facts that define its appearance, durability, and treatment history.

Visually, the color reads as a deep, saturated blue with a vivid intensity that remains consistent across the face of the cabochon, producing a uniform field of color rather than a patchy or zoned appearance. The semi translucent character permits a measured transmission of light into the body of the stone, creating a soft internal glow beneath the domed surface, while the excellent polish produces crisp, specular highlights on the apex of the cabochon. Because the stone is a cabochon rather than a faceted cut, the interaction of light emphasizes color depth and surface sheen over brilliance and facet reflection, making this sapphire particularly well suited for designs that prioritize rich color and a classic, understated aesthetic.

The clarity assessment of very slightly included, as observed at eye level, indicates that inclusions are minimal and do not materially detract from the overall visual quality when the stone is viewed without magnification. This degree of clarity is consistent with natural sapphires from Sri Lanka, where characteristic silk and fine mineral inclusions are common and can contribute to a stone’s identity without adversely affecting appearance. The disclosed heat treatment is a routine enhancement applied to improve color uniformity and reduce unwanted tone or pleochroism, and such treatment is broadly accepted in the trade when documented. Buyers who require independent verification or certification are advised to request a laboratory report from a reputable gemological laboratory, and our team is available to assist with documentation and with any technical questions regarding treatment and origin.

From a practical standpoint, this sapphire’s cabochon form and size make it versatile for a range of settings, including bezel set rings, pendants, and statement pieces where a smooth, domed surface is desirable. The overall dimensions and 2.91 carat weight provide a substantial visual presence without being overly large, and the oval shape offers a balanced silhouette for both contemporary and traditional jewelry designs. Sapphire is a corundum mineral with high surface hardness, offering excellent day to day wearability, though care should be taken to avoid hard knocks that could chip the girdle or dome. Routine care includes gentle cleaning with warm soapy water and a soft brush, and periodic professional inspection to ensure secure settings. Because heat treatment is permanent under normal conditions, standard cleaning methods are appropriate, but ultrasonic cleaning should be used with caution and only after consulting a professional jeweler.

In summary, this semi translucent 2.91 carat Ceylon blue sapphire, cabochon cut, vivid in color, and very slightly included at eye level, represents a well defined combination of strong color, polished finish, and practical size. The disclosed heat treatment and Sri Lankan origin are consistent with the stone’s visual character, and the cabochon presentation accentuates color saturation and surface luster. The Natural Sapphire Company is prepared to provide additional imagery, measurements, and any documentation requested to support an informed evaluation of this gem. For customers seeking a classic, color forward sapphire with reliable provenance and a refined polish, this stone warrants consideration within a thoughtful design or collection.