7.26 Ct. Blue Star Sapphire from Burma (Myanmar)

This Burmese blue star sapphire weighs 7.26 carat, and is cut to an oval cabochon with dimensions of 10.89 by 9.28 by 6.55 mm, the proportions reflecting a deliberately high dome to enhance asterism, the cabochon profile exhibiting precise symmetry and even curvature across the table, the lapidary work focused on preserving parallelism with the basal plane of the corundum to maximize star sharpness, the cutting technique produces a well centered, six ray star that presents cleanly when illuminated from above, the clarity is evaluated as slightly included at eye level, the internal rutile silk responsible for the chatoyant effect is visible and contributes constructively to the star rather than detracting from gem performance, these inclusions explain the translucency and the star contrast while maintaining sufficient body for intense color, the polish is excellent, the surface exhibits a glassy finish free from visible abrasions, the girdle area is smoothly rounded to facilitate secure bezel and closed back settings, and no structural fractures reach the surface.

Color grading indicates intense blue saturation with a medium to medium deep tone that retains vividness under typical lighting, the hue displays classic Burmese character with a cool overtone and uniform distribution, the interaction between the dense silk and the body color produces a bright, well defined star that moves predictably across the dome, there is no heat or other enhancement, the origin is Burma Myanmar, provenance and untreated status are important in assessing long term value and rarity, for mounting we recommend an orientation with the table perpendicular to the direction of typical light sources to fully reveal the asterism, a protective bezel or low profile setting will preserve the high dome while securing the stone, from a technical viewpoint the gem is ideal for buyers who prioritize natural phenomena and documentary integrity, The Natural Sapphire Company endorses this piece as a fine example of traditional cabochon craftsmanship combined with strong natural asterism, please contact us for gemological reports, facet to cabochon transition notes, or assistance in choosing a setting that will best display the unique optical characteristics.