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

This listing describes a single, natural blue sapphire weighing 11.64 carats, presented in an oval outline with exact dimensions of 13.89 by 11.93 by 7.19 millimeters. The stone has been shaped as a double cabochon, a form in which the surface curvature is developed on both faces to produce smooth, rounded domes. The tabular profile and domed surfaces emphasize surface luster and shade rather than faceted light return, resulting in an appearance that is characteristically gentle and saturated rather than brilliant. The sapphire is opaque, and that opacity contributes to its dense, solid color presentation. The cut and proportions are executed with consistent symmetry, and the overall dimensions make this material well suited for a principal center stone in a substantial pendant or a statement ring within a protective setting.

Color evaluation identifies this sapphire as having vivid intensity in the blue range, with a deep, saturated tone that reads strongly across multiple lighting conditions. The surface shows uniform color distribution without noticeable zoning, and the double cabochon form aids in presenting consistent hue across the crown and pavilion. Clarity is graded as slightly included when assessed at normal viewing distance, meaning there are small internal or surface features that are visible to the unaided eye under close inspection. These inclusions do not materially detract from the gemmatic presence of the stone, and they are common in natural sapphires of this size and origin. The polishing is graded excellent, producing a smooth, reflective finish that enhances the perceived depth of color and provides a clean, even luster across the domed surfaces.

This sapphire has not been subjected to any enhancement, it is natural in its appearance and stability, and the declared origin is Ceylon Sri Lanka. Sapphires from this region are historically recognized for strong, saturated blues and for producing material suitable for both cut and cabochon presentations. The absence of enhancement simplifies considerations related to long term care and valuation, as there is no introduction of heat treatment or diffusion in the stone. From a handling and setting perspective, cabochon stones benefit from protective mountings, particularly bezel or closed settings, which reduce exposure of the domed surface to potential knocks. Standard gem care practices apply, including avoiding harsh chemical exposure, avoiding abrupt temperature changes, and consulting with a professional jeweler prior to ultrasonic or steam cleaning, so that any cleaning method is chosen with respect to the stone mounting and the presence of any inclusions.

The Natural Sapphire Company provides this description to document the objective properties of the piece and to assist in informed decision making. For clients seeking additional documentation or verification, laboratory reports, high resolution images, and supplementary measurements can be arranged on request. This sapphire is described here with emphasis on measurable attributes and observed appearance, including carat weight, dimensions, cut style, clarity grade, color intensity, polish quality, enhancement status, and origin. Should you require guidance on suitable mounting styles, gemological comparisons, or care instructions tailored to a specific use scenario, our team is available to provide technical details and recommendations.