0.66 Ct. Bi Color Sapphire from Madagascar

This transparent 0.66 carat cushion shape bi color sapphire measures 5.56 x 4.08 x 3.25 mm, a size that affords a fine balance between presence and wearability. The gem has been fashioned to a mixed brilliant cut, employing a brilliant facet schema on the crown, combined with a modified pavilion geometry that has been optimized to reconcile light return and color saturation, a choice that speaks to deliberate lapidary intent. At face viewing the clarity is graded very slightly included, evaluated at eye level, indicating minimal internal features that do not detract from overall visual impact when set. The polish is excellent, and facet junctions are executed with precision, yielding crisp facet planes and well controlled symmetry, factors that enhance specular reflection and support strong contrast between flashes of fire and broad areas of body color. The stone is transparent, and its proportions and table size have been judged to permit efficient ingress of light into the pavilion, and balanced dispersion across the crown, delivering an engaging interplay of brilliance and scintillation for its weight class.

Color is the defining character of this sapphire, a genuine bi color specimen exhibiting two distinct hue zones with medium color intensity, and subtle transitions that create depth rather than abrupt banding. When viewed in different orientations the gem presents varying emphasis between cooler blue tones and warmer green yellow tones, an effect that can be described functionally as orientation dependent color distribution, which adds a dynamic quality to the gem in practical wear. The mixed brilliant faceting has been selected to accentuate that duality, by using facet angles that maximize both saturation and light return so that each hue is revealed under appropriate lighting conditions. The stone has undergone heat treatment, an established enhancement that in this instance has improved color homogeneity and reduced the visual prominence of minute inclusions, without diminishing the fundamental crystalline character. Origin is Madagascar, a source known for producing material with interesting color zoning and good crystallographic integrity, and this provenance aligns with the observed combination of clarity and color modulation.

From a durability and long term perspective this sapphire is inherently well suited to continued wear and display, owing to the robust corundum matrix and a hardness of 9 on the Mohs scale, making it resistant to everyday abrasion and suitable for rings and other frequently worn jewelry. The excellent polish and precise cut will help maintain surface brilliance over time, provided routine care is observed, and the heat treatment applied is stable under normal conditions, assuring that the attractive medium intensity colors will remain consistent for years. For mounting, consider settings that expose the pavilion and orient the longer axis to highlight the bi color effect, prong mounts that allow light from multiple angles, or low bezel designs that secure the stone while still permitting color interaction, choices that will influence perception of hue and brilliance. Cleaning with warm soapy water and a soft brush is recommended, and professional ultrasonic or steam cleaning may be used with discretion depending on setting and inclusions.

At The Natural Sapphire Company our selection emphasizes both gemological integrity and refined lapidary workmanship, and this cushion bi color sapphire exemplifies that approach through careful facet design, meticulous polish, and responsible enhancement disclosure. The stone is compact but visually complex, and its dual color personality will continue to captivate because the cutting strategy and excellent finish preserve and amplify the optical behaviors inherent to the material, while the underlying corundum structure assures resilience. For collectors and connoisseurs who value technical refinement and long term performance, this sapphire offers a sophisticated balance of color dynamism, structural durability, and lapidary craftsmanship, an ensemble that will reward regular viewing and wear with enduring beauty.