4.58 Ct. Blue Sapphire from Ceylon (Sri Lanka)

This transparent round blue sapphire weighs 4.58 carats and measures 11.00 by 10.91 by 5.52 mm, presented by The Natural Sapphire Company. The gem is fashioned in a mixed brilliant cut, combining a precisely faceted crown with a modified pavilion to optimize light performance. Its shape is classic round, proportioned for strong presence and versatile mounting options. The clarity is graded very slightly included when evaluated at eye level, indicating that any internal features are minor and do not distract from overall visual appeal. Color is described with intense color intensity, and the surface finish shows excellent polish, creating a clean and reflective presentation. The stone has been heat treated, a standard and stable enhancement for blue sapphires, and its reported origin is Ceylon Sri Lanka, a source well known for producing richly hued sapphire material.

The cut and faceting of this sapphire are central to its optical identity, and they have been executed to accentuate both brilliance and scintillation. The mixed brilliant structure uses numerous small facets on the crown to disperse light and generate lively sparkle, while the pavilion facets are arranged to return light through the crown in a balanced manner. This combination produces a dynamic play of light that reads as a bright and lively face up appearance, especially in natural daylight. The excellent polish further amplifies the effect, allowing crisp facet junctions and clean reflections. As a result of these cutting choices and execution, the gem commands attention as a focal element in a setting, reflecting light with clarity and controlled brilliance that complements the inherent color.

Color characteristics are a defining attribute for sapphires and this specimen exhibits an intense color intensity that contributes directly to its visual impact. The saturation is vivid and evenly distributed across the table and pavilion, delivering a consistent hue from multiple viewing angles. Mid tone to slightly deep tone balance allows the blue to read as strong and vibrant without appearing overly dark, which supports versatility for various jewelry designs. The gem’s transparency enhances color purity, enabling light to penetrate and interact within the stone, reinforcing depth and presence. Origin information from Ceylon Sri Lanka situates this sapphire within a traditional producing region associated with attractive blue varieties, and the heat treatment is a conventional enhancement applied to refine color and clarity while maintaining structural stability.

Regarding clarity and durability, the very slightly included grade at eye level indicates that the gem contains inclusions that are modest and generally not visible without magnification. These features do not materially detract from performance or aesthetics when the stone is viewed in typical jewelry contexts. The excellent polish reduces the appearance of any superficial irregularities and supports strong light reflection. Heat treatment, as noted, is a routine and widely accepted practice that stabilizes color and can improve the visual uniformity of natural sapphires. For mounting and wear, the sapphire’s proportions and robust corundum hardness make it suitable for a broad range of settings, including solitaire rings, halo designs, and pendant applications, where the stone can function as the centerpiece of a refined composition.

Presented with specifications and provenance by The Natural Sapphire Company, this 4.58 carat round Ceylon blue sapphire is positioned as a gemstone that combines technical cutting quality with appealing natural attributes. The mixed brilliant cut, intense color intensity, very slightly included clarity when evaluated at eye level, and excellent polish produce a gem that reads as luminous and substantial when set. For collectors and jewelers seeking a singular stone with strong face up presence and proven origins, this sapphire offers clarity of character and optical performance. Further details including photographic documentation and gemological reporting are available upon request from The Natural Sapphire Company for those who wish to review certification or discuss custom mounting and design options.