3.91 Ct. Greenish Blue Sapphire from Ceylon (Sri Lanka)

This transparent greenish blue sapphire weighs 3.91 carats and presents a confident round shape with face up dimensions of 9.10 x 9.03 x 5.49 mm, ideal proportions for a prominent center gemstone. The stone is faceted with a mixed brilliant cut, combining a brilliant style crown with a precise pavilion arrangement to maximize return of light and scintillation. The color displays an intense saturation across the stone, yielding a strong, vivid greenish blue that reads immediately on the finger or in a pendant. The polish is excellent, and the overall finish is meticulous, supporting a clean visual presentation. The sapphire is heat treated, a stable and widely accepted enhancement that refines tone and clarity without compromising durability. Origin is recorded as Ceylon Sri Lanka, a source known for lively, bright blue and blue green sapphires, and the stone has been evaluated by experienced gemologists at The Natural Sapphire Company.

Size and clarity are the defining features that make this sapphire particularly suited to a statement piece. At just over nine millimeters across and approaching four carats, it delivers substantial presence without overwhelming typical design proportions, occupying the visual center of attention in a solitaire ring or a single drop pendant. The gem is described as very slightly included when evaluated at eye level, indicating only minor inclusions that do not materially interrupt sight lines or reduce transparency. This clarity level preserves the stone s inherent brilliance and contributes to strong face up brightness when set. The combination of nearly four carats and very slight inclusion means the gem will read as a clear, lively center stone in most lighting, capturing and returning light with the kind of fire and sparkle that defines a statement jewel.

The mixed brilliant cut and excellent polish are technical attributes that translate directly into visual impact and wearability. The mixed brilliant style concentrates facets to enhance scintillation and contrast, permitting the intense greenish blue color to play across the crown facets as the piece moves. The depth dimension 5.49 mm supports balanced proportions that maintain both a generous face up area and sufficient pavilion for light performance, contributing to a pleasing hand feel and secure bezel or prong settings. Heat treatment is disclosed and stable under normal wear and standard jewelry maintenance, and it enhances color uniformity without altering the gem s crystalline integrity. Ceylon origin contributes desirable color character, typically a lively blue green that benefits from the mixed brilliant cutting approach, and the stone s excellent polish ensures smooth facet junctions and minimal surface abrasion, factors that assist a jeweler in producing a refined finished piece.

Practical considerations for design and setting emphasize the sapphire s suitability as the primary element in a statement piece. For ring settings, four or six prongs will showcase the round form while allowing light ingress and exit, and a low to medium profile will balance presence with daily wearability. In pendant applications, a solitaire bezel or a simple prong mount will capitalize on the gem s face up size and intense color, making the stone the visual focus against either white or yellow metal. The very slight inclusions mean flexibility in setting choice with minimal need for protective designs, while the stone s impressive dimensions make it a strong candidate for custom commissions where proportions and metal choice can be precisely tailored. At The Natural Sapphire Company we can provide additional photographic plates under standardized lighting and offering guidance on mounting options to preserve and enhance the sapphire s optical performance, ensuring the finished jewel communicates the character and presence inherent to this rare greenish blue sapphire.