2.48 Ct. Black Star Sapphire from Ceylon (Sri Lanka)

This listing presents a single, natural black star sapphire, an opaque gem weighing 2.48 carats, presented in a classic oval cabochon form. The stone measures 8.77 by 6.58 by 3.77 millimeters, and it has been cut to emphasize its star phenomenon and to provide balanced proportions for a variety of jewelry settings. The cabochon cutting style is appropriate for star sapphires, allowing the asterism to appear sharp and centered when the stone is viewed under a single or strong point light source. Color intensity is described as intense, with a uniform dark body tone that supports the visibility of the star, and the surface finish is an excellent polish that contributes to a lively and even reflection across the dome. There has been no enhancement applied to this gem, and it retains its natural surface and internal characteristics, which are consistent with material originating from Ceylon Sri Lanka.

From a gemological perspective the star effect is produced by fine needle like inclusions aligned along crystallographic directions, and this specimen displays a distinct and focused six ray star when light is properly aligned. The cabochon profile has been shaped to maximize the optical alignment of those needles, producing a sharp star that travels across the dome as the viewing angle changes. The intense color intensity provides a strong contrast with the star, making the asterism readily observable in both direct and diffused lighting. The excellent polish reduces surface scattering and highlights the star without obscuring surface detail, and the overall appearance is one of a well executed classic star sapphire in a natural state. Origin documentation indicates Ceylon Sri Lanka, a locality historically noted for fine sapphire material and for specimens that combine attractive body tone with reliable star formation.

In terms of durability, sapphire is among the hardest commonly used gem materials, and this black star sapphire rates nine on the Mohs hardness scale. This places it well above common jewelry gemstones such as quartz which rates seven, and topaz which rates eight, and only below diamond which rates ten on the same scale. That relative hardness means the stone is highly resistant to scratching from most materials it might contact during normal wear, and it is suitably robust for use in rings, bracelets, pendants, and everyday pieces, provided standard care practices are followed. The cabochon shape also reduces the risk of chipping compared to faceted edges, because the dome distributes impact across a rounded surface. Despite its hardness and cabochon form, the gem should be protected from hard knocks and from abrasive contact, and cleaning with warm soapy water and a soft brush is recommended to maintain the polish and star clarity.

When considering setting and design, the oval proportions and moderate size allow for versatile mounting options, and the dimensions of 8.77 by 6.58 by 3.77 millimeters fit well into classic ring settings or designer pendants where the star can be oriented to shine under typical lighting. The weight of 2.48 carats gives the gem a presentable face up appearance without overwhelming a refined setting. Because there are no enhancements, the gem requires no special disclosure beyond its natural origin and treatment status, and its provenance from Ceylon Sri Lanka is a material detail of interest to collectors and connoisseurs. The Natural Sapphire Company endorses accurate description and clarity of origin for the gemstones offered, and this black star sapphire is consistent with our standards for natural, unenhanced material that exhibits characteristic optical phenomena and durable physical properties.