3.51 Ct. Blue Sapphire from Ceylon (Sri Lanka)

This transparent cushion shape blue sapphire weighs 3.51 carats and measures 10.37 x 7.91 x 4.52 mm. Cut in a mixed brilliant style, the pavilion and crown faceting combine larger facets for depth with smaller facets for scintillation, producing balanced light return and lively facet contrast. The stone displays a vivid color intensity, a saturated medium to deep blue that carries subtle violet notes in certain lighting, consistent with fine Ceylon origin material. Clarity is graded as slightly included when evaluated at eye level, with small internal features that do not significantly interrupt the overall transparency or the gemstone contribution to light performance. The polish is excellent, ensuring smooth facet junctions and sharp facet reflections. The sapphire has been heat treated, which is a widely accepted enhancement to improve color and clarity in natural sapphires, and its origin is Ceylon Sri Lanka as documented. These objective attributes describe a gem that combines classic color character with solid cutting and surface finish, suitable for a centerpiece in a custom jewelry design.

In custom settings the cushion outline and mixed brilliant faceting open a range of mounting approaches that emphasize either color depth or brilliance. A traditional four prong setting will present the gem in the most open manner, allowing maximum light exposure to emphasize color and internal glow, while a low bezel will protect the slightly rounded girdle and offer a cleaner contemporary silhouette. For higher contrast and added brilliance, a halo of small round brilliant diamonds or white sapphires will increase apparent size and create a bright frame that accentuates the vivid blue, while tapered baguette side stones or step cut diamonds will lend an architectural, refined profile. Metal tone will change perceived warmth, with yellow gold adding a warm contrast that can enhance any golden or slightly greenish undertones, while platinum or white gold will maintain a cooler, more neutral presentation that reinforces the blue saturation. Because sapphire is one of the hardest commonly used gemstones, this stone is well suited to rings, pendants, and earrings intended for regular wear, when set to protect the girdle and table and paired with secure mounting techniques.

Complementary gemstone combinations can be selected to emphasize different design intentions, whether to heighten contrast, introduce warmth, or create tonal harmony. For pure brilliance and a classical approach, a halo and shoulders of high color grade round brilliant diamonds create a luminous frame that does not compete with the sapphire hue. To introduce warm contrast, accent stones such as yellow sapphires, citrines, or warm tone fancy yellow diamonds will create a lively complementary palette, useful in vintage inspired or cocktail ring designs. For a nuanced color story, consider pairing the central Ceylon blue sapphire with lighter cornflower blue sapphires set as a graduated halo or channel, producing an elegant ombre effect. For a bolder, chromatic contrast, emerald or tsavorite accents provide a striking juxtaposition between saturated green and deep blue. For softer, romantic palettes, small morganite or padparadscha sapphire accents will introduce gentle peach pink notes that sit well with rose or yellow gold mountings. Practical custom configurations include a three stone ring with tapered baguettes, a halo pendant with a diamond bail, bezel set studs with diamond halos for daily wear, or a bespoke cluster brooch where multiple textures and shapes create an heirloom style. The Natural Sapphire Company can provide guidance on setting geometry, metal choice, and accent stone selection to achieve the desired balance between color saturation, brilliance, and practical wearability, while preserving the documented origin and treatment history of the sapphire.