3.40 Ct. Blue Sapphire from Madagascar

This oval blue sapphire weighs 3.40 carats, and measures 10.02 x 6.78 x 5.75 mm, presenting a balanced length to width ratio that favors classic elegance and finger coverage, and offering substantial presence without overwhelming proportion. The gem is transparent, with an intense color intensity and an excellent polish, and it is free from any enhancement, originating from Madagascar. At The Natural Sapphire Company we prioritize material integrity, and this natural, untreated example highlights the value of origin and treatment disclosure, it also demonstrates how raw geological conditions translate into a finished gem suitable for an engagement ring that is intended to last for decades.

The mixed brilliant cut used on this oval sapphire combines a brilliant facet arrangement on the crown with a tailored pavilion design to optimize light return for an elongated oval silhouette. The length to width ratio of approximately 1.48 produces a visually flattering profile when set on the finger, and the measured pavilion depth of 5.75 mm results in a depth percentage that supports strong internal reflection and a uniform face up appearance. Facet junctions are well aligned, and the excellent polish enhances facet clarity, permitting crisp facet reflections and lively scintillation. The mixed brilliant approach allows for concentrated return of blue saturation toward the center while also breaking up light into smaller flashes at the edges, which makes the stone read larger on the finger compared with a step cut of similar carat weight, and also helps to mask small peripheral extinction that can occur in ovals with greater length.

Clarity plays an important role in performance, and this sapphire is graded very slightly included at eye level, which indicates inclusions are present under close inspection but do not detract from visual appeal when worn. The internal features are consistent with natural corundum from Madagascar, and they serve as a fingerprint for authenticity while having negligible impact on durability. The intense color intensity is evenly distributed across the table, with a stable saturation that resists washed out or overly dark zones, and the tone places the stone in a range that reads as vivid and regal under both daylight and incandescent lighting. The absence of heat or other enhancements preserves the original chromophore balance, ensuring that color remains stable over time, and it affirms provenance and value for a buyer seeking a natural, unaltered gemstone.

For an engagement ring application this sapphire is an exemplary choice, the combination of a 3.40 carat weight, oval outline, and mixed brilliant cutting gives strong presence while maintaining wearability. The stone is well suited to a solitaire setting when the goal is to showcase color and depth, and it also supports halo and three stone configurations when additional brilliance or perceived size is desired. From a craftsmanship perspective, setting considerations include a low profile pavilion clearance to protect the girdle, precise prong placement to minimize light obstruction, and a secure bezel design if maximum protection is required. At The Natural Sapphire Company we can advise on mounting options that complement the stone geometry and preserve light performance, and we ensure our selection process prioritizes optical symmetry, polish quality, and stable untreated color. This Madagascar sapphire offers a technical blend of faceting, clarity, and color that translates into an engagement gem with both aesthetic impact and long term integrity, and we welcome inquiries for bespoke mounting and certification to accompany purchase.