17.09 Ct. Blue Star Sapphire from Ceylon (Sri Lanka)

This AGL certified Blue 17.09 carat oval shape star sapphire, presented by The Natural Sapphire Company, combines classic asterism and robust gemological properties in a single, substantial gemstone. The cabochon cut measures 15.87 x 10.82 x 10.57 mm, and the translucent body color shows medium color intensity, producing a distinct and well centered star. The clarity is graded slightly included at eye level, a common and often desirable condition for star sapphires, since the fine needle like inclusions create the sharp asterism that defines the variety. The stone is natural with no enhancement and originates from Ceylon Sri Lanka, a long respected source for quality star sapphires. The gem displays an excellent polish, which contributes to both its aesthetic appeal and to a smoother surface that resists superficial abrasion.

Beyond its visual qualities, this star sapphire is inherently durable and well suited to daily wear in jewelry, owing to its corundum composition and Mohs hardness of 9. That level of hardness affords significant resistance to scratching from common materials, making it appropriate for rings, pendants, and bracelets when set securely. The gem also has good toughness, and the cabochon form further protects the stone by rounding and distributing impact stresses, reducing the likelihood of chipping. For everyday settings, a protective bezel or well designed prong setting is recommended to minimize exposure to knocks and lateral stress. Routine care is straightforward, involving warm soapy water and a soft brush, gentle drying with a lint free cloth, and periodic inspections by a professional jeweler to ensure secure settings. Avoid prolonged exposure to harsh chemicals and extreme thermal shock. Taken together, the gemological profile, excellent polish, and cabochon format make this AGL certified Ceylon star sapphire a practical and resilient choice for regular wear, combining enduring beauty with dependable performance.