1.38 Ct. Greenish Blue Sapphire from Madagascar

This 1.38 carat oval greenish blue sapphire from Madagascar presents a precise balance of cut and natural material character, with dimensions measuring 7.74 by 5.60 by 3.97 millimeters, and a depth proportion of approximately fifty nine point five percent, indicative of a cutter intent on optimizing both color saturation and light return. The mixed brilliant cut integrates a brilliant facet schema on the crown with more restrained pavilion geometry, producing a strong interplay of scintillation and broad flashes that complement the stone's dark color intensity, and the excellent polish confirms crisp facet junctions and minimal surface abrasion. Clarity is graded slightly included at eye level, and the stone exhibits translucent transparency with inclusions that are present but do not dominate the gem, allowing the mixed facet architecture to channel light while preserving the rich greenish blue hue. The sapphire has undergone routine heat treatment to stabilize and enhance tone and clarity, a stable enhancement that is widely accepted in the trade, and the Madagascar provenance aligns with known deposits that yield saturated, sometimes darker tones that benefit from careful cutting to avoid dead zones and to control windowing.

From a durability perspective this sapphire is corundum, with a Mohs hardness of nine, making it one of the hardest gem materials in jewelry, second only to diamond at ten, and significantly harder than common gemstones such as topaz at eight, and quartz at seven, therefore highly resistant to scratches and well suited to everyday wear. The combination of high hardness and excellent polish means surface luster will remain durable under normal conditions, and the depth and mixed brilliant faceting reduce vulnerability to facet edge chipping in most standard settings, while a protective bezel or lower prong height can further minimize impact risk. At The Natural Sapphire Company we emphasize that the heat treatment is stable, but like all corundum pieces, the gem should avoid extreme thermal shock and harsh chemical exposure to preserve its polished finish. This stone is technically refined, robust, and designed to perform both optically and physically in fine jewelry applications.