0.85 Ct. Bluish Purple Sapphire from Ceylon (Sri Lanka)

This 0.85 carat round bluish purple sapphire from Ceylon, Sri Lanka, is a compact and technically refined specimen offered by The Natural Sapphire Company. The stone measures 5.45 by 5.39 by 3.86 millimeters, presenting a face up diameter that reflects conventional round proportions with a slightly deep profile. The cutting style is faceted with a mixed brilliant cut, combining a faceted crown of smaller star and kite facets with a pavilion executed in a modified brilliant arrangement to balance scintillation and color dispersion. The clarity grade is slightly included when evaluated at eye level, and the surface finish is an excellent polish that enhances light return across the crown facets. No enhancement has been applied to this sapphire, a factor that preserves original color distribution and internal characteristics, and which is an important consideration for collectors who prefer untreated material.

From an optical standpoint this sapphire exhibits the classic corundum properties that inform both its performance in jewelry and its visual personality. Corundum has a refractive index in the range typically around 1.76 to 1.77 and a modest dispersion, which contributes to controlled fire rather than the pronounced spectral flashes seen in some other gem species. The mixed brilliant cut intensifies scintillation and contrast within the stone, producing a dynamic display when the piece is set and moved under light. The measured depth relative to average diameter is approximately seventy one percent, a proportion that tends to concentrate color and can deepen face up tone especially in lighter saturated material. Because the color intensity is light, the pavilion design and depth work together to concentrate the bluish purple hue without producing excessive windowing. Slight inclusions are present, consistent with the slightly included grade, and these are visually integrated into the stone by the cutter to minimize their impact on overall brilliance while retaining structural integrity.

Color is the principal character of this sapphire and its bluish purple hue responds differently across a range of skin tones and metal settings. On cool complexions with pink or bluish undertones the sapphire’s blue component is emphasized, producing a crisp and refined look, especially when mounted in white metals such as platinum or rhodium plated white gold where the cool metal reinforces the stone’s blue facet reflections. On neutral complexions the balance of blue and violet will appear harmonious, allowing the gem to read as an elegant mid tone that complements natural skin balance and works well with both warm and cool metal accents. On warm complexions with golden or olive undertones the purple facet in the bluish purple blend will read slightly more prominent, generating a lively contrast that can be enhanced by warm metals such as rose gold or yellow gold. Rose gold, in particular, gently warms the overall presentation and encourages the violet side of the spectrum to bloom, creating an effect where the sapphire appears to shift toward a more violet leaning hue while still retaining its blue core. For clients seeking maximum perceived size and sparkle on warm skin tones a halo of colorless accent stones set in a warm metal surrounding the center sapphire will add visual scale and create a distinct frame that amplifies the bluish purple contrast.

Practical mounting and design choices can amplify the optical advantages of this untreated Ceylon sapphire while protecting its proportions and inclusions. A prong setting with minimal metal visible around the girdle will optimize light entry and allow the mixed brilliant cutting to perform with lively scintillation, and a low profile basket with pierced under gallery will preserve the stone’s depth driven color. For fingers where the sapphire will be worn daily a bezel or partial bezel can provide additional security and a modern visual profile, while acknowledging that a full bezel will reduce visible light return compared to a traditional prong setting. Given the slight inclusions and the depth of the pavilion, an experienced jeweler can orient the stone when setting to minimize the appearance of internal features and to position any visible inclusions toward the side or back where they are less noticeable. Because the piece is untreated, The Natural Sapphire Company recommends routine professional cleaning in warm soapy water and avoidance of ultrasonic cleaning if the setting involves repairs or if inclusions compromise local stability. For customers interested in bespoke mounting, metal choice, or a certification of origin and authenticity, The Natural Sapphire Company can provide detailed documentation and design services to ensure the final piece showcases the sapphire’s unique bluish purple character while matching the wearer’s skin tone and lifestyle.