6.19 Ct. Purplish Blue Cabochon Star Sapphire from Ceylon (Sri Lanka)

This gemstone is a translucent 6.19 carat oval shaped purplish blue star sapphire, measuring 9.21 x 8.47 x 7.69 mm, presented in a classic cabochon cut. The surface is finished with an excellent polish that enhances both the depth of color and the visibility of the star. Clarity is graded as very slightly included as evaluated at eye level, which yields attractive internal character without compromising visual appeal. Color intensity is vivid, and the stone is entirely natural with no enhancement, sourced from Ceylon Sri Lanka. The combination of precise cabochon shaping and expert polishing produces a clean domed surface that presents the star sharply and maintains an elegant translucency, allowing light to interact with the internal structure for optimum display.

The asterism in this stone is a natural phenomenon formed by a regular arrangement of rutile needle inclusions aligned within the crystal lattice. When illuminated, these inclusions reflect light as a coherent six rayed star, centered across the dome and moving slightly as the light source or the gem is tilted. The ray arms are well defined, appearing as bright, silvery lines that contrast with the purplish blue body color, and the star intensifies under direct light while remaining perceptible under softer ambient illumination. The translucency of the cabochon allows the star to appear to float just below the surface, producing a depth and dimensionality that is characteristic of fine star sapphires. The symmetry and centering of the asterism are the result of careful cutting and proportioning, making the star responsive and visually engaging from multiple viewing angles.

The physical properties of corundum make this star sapphire particularly suited for daily wear. With a hardness of 9 on the Mohs scale, sapphire is second only to diamond in resistance to scratching among natural gemstones commonly used in jewelry. The cabochon cut further enhances durability by eliminating sharp facet junctions and distributing surface stress across a rounded dome, reducing the risk of chipping during routine wear. The stone shows no evidence of treatments or filling, which preserves its inherent toughness and stability. For secure daily wear consider settings that protect the girdle and rim, such as a bezel setting or a protective halo, while prong settings with well designed crowns can also offer satisfactory protection when the stone is seated properly. Routine care is straightforward, warm soapy water and a soft brush will remove everyday residues, and professional inspection of the setting at periodic intervals will ensure continued security. Avoid extreme forceful impacts and prolonged exposure to household chemicals, and remove jewelry when performing heavy manual labor or contact sports, to preserve the polish and the integrity of the mounting. The Natural Sapphire Company stands behind this gem as a natural, untreated Ceylon star sapphire that combines aesthetic refinement with the structural resilience expected for daily wear in rings, pendants, or other fine jewelry settings.