3.07 Ct. Blue Sapphire from Madagascar

This transparent C.Dunaigre certified Vivid Blue sapphire, weighing 3.07 carats, presents as a classic oval, measuring 10.53 x 8.61 x 4.42 mm, and is offered to collectors and connoisseurs by The Natural Sapphire Company. The combination of size and face up dimensions yields an impressive visual presence relative to its carat weight. The grade of Vivid Blue denotes both intense saturation and a balanced medium to slightly deep tone that reads as a pure, true blue under standard daylight photographic lighting. Clarity has been evaluated at eye level and graded as eye clean, meaning no inclusions detract from the gem without magnification, and the finish is described as excellent polish, with crisp facet junctions and a smooth pavilion and crown that maximize transmitted light. The stone carries full disclosure of heat treatment, a stable and industry accepted enhancement that has been applied to optimize color and clarity, and the accompanying C.Dunaigre report documents the gemography and measurements for provenance and quality assurance.

Technically the stone is cut as a mixed brilliant oval, a faceting strategy that combines a brilliant style crown, often with triangular and kite facets radiating from a dominant table, and a modified pavilion that may incorporate step or mixed facets to balance weight retention and optical performance. The measured depth of 4.42 mm translates to a depth ratio of approximately 46 percent when calculated against the average diameter of 9.57 mm, a proportion that characterizes a shallower pavilion profile. This shallow profile expands the table and enhances face up spread, producing a larger apparent size on the finger or in a setting, and biasing the optical performance toward strong, uniform color face up rather than maximal fire or scintillation that deeper proportions would emphasize. The mixed brilliant architecture in this oval has been executed to align pavilion facet angles and crown heights for optimal light return, and the excellent polish and precise facet junctions reduce light leakage and surface diffusion, resulting in a clean, velvety face up appearance that many technical buyers specifically seek.

Color and clarity interact in this specimen to produce the vivid blue classification. The gem exhibits a saturated blue hue with limited secondary modifiers, and the vivid intensity indicates a high level of chroma while maintaining a clarity that allows internal light pathways to be effective. From a gemological perspective the blue color mechanism is consistent with iron titanium intervalence charge transfer, and the trace element profile commonly observed in Madagascan corundum produces a strong, electrically mediated absorption banding that yields pure blue tones without pronounced green or purple modifiers. The eye clean clarity grade implies that any common microscopic rutile silk or tiny mineral inclusions are minimal and dispersed, serving at most to soften light leakage and contribute to a slightly velvety texture rather than producing visible reach or feathering at normal viewing distances. Heat treatment has been applied in a controlled manner to stabilize and intensify the blue, and this treatment is permanent under standard wear. The combination of vivid chroma and transparent body color allows the stone to read richly saturated under both daylight and artificial light, with excellent color uniformity across the oval field.

The stated origin of Madagascar carries both geological and market significance and it meaningfully adds value for knowledgeable buyers. Madagascar is a relatively recent but prolific source of high quality corundum, with deposits that often yield stones displaying saturated, pure blue hues and high transparency reminiscent of the best of the modern sapphire markets. The provenance from Madagascar, as documented by the certification and The Natural Sapphire Company provenance practices, informs collectors about the trace element chemistry and typical inclusion suites they can expect, and it also situates the sapphire within a well respected supply chain for contemporary top quality material. From a craftsmanship standpoint the cutter has balanced weight retention with optical considerations, preserving 3.07 carats while delivering an expansive face up area and a vivid color that benefits from the island provenance. For setting recommendations this sapphire will perform exceptionally well in a medium to low bezel or open gallery setting that showcases its face up color and allows light to enter the broad table, and routine care with gentle cleaning solutions and a soft brush will preserve the excellent polish and saturation. The Natural Sapphire Company provides the C.Dunaigre report and full disclosure on heat treatment and origin, offering technical documentation and provenance that collectors and designers rely upon when selecting a premium Madagascar vivid blue sapphire.