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

This listing describes one translucent blue sapphire weighing 1.93 carats. The gemstone is fashioned into a round shape with a cabochon cutting style, presenting smooth domed surfaces and a soft, even silhouette. The measured dimensions are 6.74 by 6.68 by 4.15 millimeters, and the cabochon profile emphasizes color and internal texture rather than faceted brilliance. The color is characterized as medium intensity blue, showing an even saturation that reads well under both natural and controlled lighting. Clarity is graded as slightly included at eye level, which is consistent with the translucent character and with many natural sapphires from the same source. The stone has an excellent polish, contributing to a smooth tactile feel and a clean surface that enhances light return across the dome. Enhancement is by conventional heat treatment, a stable and widely accepted process that refines color and clarity without introducing foreign substances. The reported origin is Ceylon, Sri Lanka, a provenance known for producing sapphires with lively tones and appealing translucency. The Natural Sapphire Company documents and verifies these attributes as part of our standard listing practices.

As a corundum variety, this sapphire rates nine on the Mohs hardness scale, which indicates a high resistance to scratching and surface abrasion. For context, diamond is rated ten, topaz is eight, and quartz is seven, so this sapphire combines substantial hardness with resilience suitable for regular wear. Hardness on the Mohs scale describes scratch resistance rather than toughness, therefore while the stone is highly scratch resistant, it is not immune to impact related damage such as chipping or cleavage if struck at an acute angle. The cabochon cut tends to distribute force across a curved profile, which can reduce the risk of chipping on the facets compared with sharp edged cuts, although a durable mounting that protects the girdle and edges is still advisable for frequent wear. The reported slight inclusions are internal markers of natural formation, they do not substantially compromise structural integrity, and they contribute to the gemological authenticity and character of the stone. Heat treatment performed on this sapphire targets color and internal clarity, it does not reduce the fundamental hardness of the corundum, and properly done heating is considered permanent.

From a design and care perspective, the 6.74 by 6.68 by 4.15 millimeter dimensions and 1.93 carat weight make this cabochon well suited to settings that emphasize a smooth top profile, including bezel and half bezel mountings that offer mechanical protection while showcasing color. The translucent nature of the material will produce a depth of tone rather than mirrored facet reflections, which can be particularly effective in minimalist and artisan settings where the stone is viewed for its color and surface texture. Given the excellent polish, standard jewelry adhesives and prongs will seat cleanly, and a flush or low cup setting can minimize exposure to potential knocks. Cleaning is straightforward, warm soapy water and a soft brush will maintain the surface sheen, and routine professional checks of the mounting are recommended to ensure continued security. Ultrasonic cleaning can be used with caution and professional guidance, since inclusions and previous treatments may influence suitability for mechanical cleaning. The Natural Sapphire Company provides full disclosure on origin and treatment, and our gemological descriptions are intended to support informed design and care decisions by jewelers and clients alike.