2.66 Ct. Bluish Green Sapphire from Ceylon (Sri Lanka)

One beautiful transparent 2.66 carat cushion shaped bluish green sapphire, dimensions 7.84 by 6.94 by 5.33 millimeters, exhibits a faceted mixed brilliant cut, clarity grade very very slightly included evaluated at eye level, intense color intensity, and an excellent polish. The mixed brilliant faceting combines a brilliant style crown with a modified pavilion, creating a dense network of small, well proportioned facets that enhance both contrast and scintillation. With a calculated depth of approximately 72.1 percent based on the average diameter, the pavilion depth has been negotiated to favor saturated color without sacrificing light return, producing a vivid, evenly distributed bluish green that remains lively face up. Facet junctions are crisp, facet planes are symmetrically aligned, and the excellent polish ensures minimal surface diffusion of light, maximizing direct and reflected return. Heat treated in line with industry practices, this piece originates from Ceylon, Sri Lanka, a source celebrated for lively tone and bright, clean color, and it is offered by The Natural Sapphire Company.

When compared to more common gemstones, the optical performance of this sapphire is distinctive, because corundum carries a refractive index near 1.76 to 1.77 and a modest dispersion of about 0.018, values that differ from diamond and other popular gems. Diamond will exhibit stronger fire and overall brilliance due to a higher refractive index and greater dispersion, however this sapphire achieves a different and highly desirable effect. The intense saturation and the mixed brilliant pavilion produce strong contrast scintillation and vivid flashes of color, yielding a lively appearance that can outperform paler stones such as aquamarine or light blue topaz, which have lower refractive indices and less contrast. Against emeralds, which are commonly cut as steps to preserve color and clarity, this cushion mixed brilliant sapphire offers markedly more scintillation and dynamic face up sparkle. The combination of a high clarity grade at eye level, excellent polish, and a purposefully deep pavilion creates a balance between color depth and light return that makes this Ceylon sapphire stand out, a balance that The Natural Sapphire Company routinely refines for connoisseurs who appreciate technical craftsmanship and optical performance.