1.18 Ct. Blue Sapphire from Ceylon (Sri Lanka)

This transparent cushion shape blue sapphire weighs 1.18 carat, with exact dimensions of 6.63 x 5.30 x 3.86 mm, and is cut to a mixed brilliant configuration that balances table and pavilion facet arrangements for optimized light return. Clarity is graded as very very slightly included, evaluated at eye level, which denotes an eye clean appearance with only minimal internal features that do not impede transparency or brilliance. The color is described as vivid in intensity, exhibiting a saturated, deep blue characteristic of high quality Ceylon Sri Lanka material. The stone has an excellent polish, which enhances facet contrast and surface luster, and it has undergone standard heat treatment to stabilize and deepen the blue tone. This combination of weight, proportions, clarity, and finish results in a gem with strong color saturation and notable optical performance, suitable for use as a focal center stone in a fine jewelry setting, and the stone is presented and authenticated by The Natural Sapphire Company.

Under varying lighting conditions this sapphire displays predictable and attractive shifts in appearance due to its mixed brilliant cut, high polish, and vivid color. In neutral daylight the gem reads as a pure, vivid blue with broad zones of saturated color across the table, and well defined facet reflections produce lively brilliance and scintillation. In direct sunlight the stone exhibits intensified contrast and pronounced scintillation, with rapid twinkling from the pavilion facets and deepening of the blue in the crown areas. Under warm incandescent lighting the sapphire tends to appear slightly richer and more velvety, the blue taking on deeper, more saturated tones with subtle hints toward violet, while cool LED or fluorescent light will emphasize the electric, vivid aspects of the blue, producing crisp facet reflections and a slightly brighter overall appearance. In low ambient light the gem maintains presence through its color saturation, presenting a dense, velvety blue that reads more uniform but still shows pinpoint flashes with movement. The mixed brilliant cut, excellent polish, and eye clean clarity together ensure consistent light performance across settings, and an open mounting or a well proportioned bezel will allow the stone to display its best optical characteristics when set.