4.15 Ct. Bluish Green Sapphire from Ceylon (Sri Lanka)

This 4.15 carat round bluish green sapphire is a study in precision cutting and optical performance, presented by The Natural Sapphire Company. The stone measures 9.60 by 9.42 by 6.04 mm, producing a depth ratio of approximately 63 percent based on the average diameter, a proportion that balances strong light return with pleasing face up presence. The mixed brilliant cut pairs a brilliant style crown with a faceted pavilion geometry, a deliberate choice to optimize both scintillation and color saturation. Crown facets are arranged to create multiple small flashes of light, while the pavilion facet architecture directs light back through the table and pavilion facets to enhance brightness and contrast. Slight asymmetry between the two diameter measurements is minimal and results in no perceptible loss of symmetry in hand, and the excellent polish ensures crisp facet junctions and clean windowing under magnification.

Color and clarity characteristics further establish this sapphire as a centerpiece quality gem. The hue reads bluish green with intense color intensity, a vivid and well balanced saturation that is characteristic of fine material from Ceylon, Sri Lanka, the documented origin. Clarity is graded as eye clean when evaluated at eye level, indicating no inclusions visible to a standard loupe freehand view, which allows the stone to present undisturbed color and scintillation to the viewer. The sapphire is natural and untreated, with no enhancement, which preserves original lattice chemistry and optical properties. Craftsmanship details include precise facet alignment and an expertly executed girdle that supports secure mounting without compromising light performance, and the excellent polish enhances facet crispness and overall luster. For a connoisseur seeking a dominant round stone with technical refinement, vibrant natural color, and uncompromised provenance, this 4.15 carat Ceylon sapphire offers a commanding presence and exceptional brilliance to serve as the focal point of an heirloom ring or a curated collection.