1.27 Ct. Blue Sapphire from Ceylon (Sri Lanka)

This oval, transparent blue sapphire weighs 1.27 carats and measures 7.35 by 5.30 by 3.69 millimeters, and it exhibits the refined proportions associated with a mixed brilliant cut, excellent polish, and a clarity grade described as very very slightly included evaluated at eye level, and it has been heat treated to optimize color and transparency. As a corundum, this sapphire benefits from a trigonal crystal lattice that produces a high refractive index and a modest birefringence, properties that govern the way light is slowed and split as it travels through the stone. The mixed brilliant cut, which balances a brilliant pattern on the crown with controlled facet arrangement on the pavilion, is used here to convert that intrinsic refractivity into strong return of white light and lively scintillation, while the oval outline maximizes the apparent face up size and provides a broad table that showcases the gem color originating from Ceylon Sri Lanka.

The visual result is a sapphire whose sparkle is the product of material and cutting working in concert. Internal clarity at the very very slightly included level allows broad, uninterrupted passages of light through the gem, minimizing diffusion and preserving contrast between bright flashes and darker facet windows, and the excellent polish ensures those flashes are sharp and mirror like rather than softened. Heat treatment has enhanced the medium light color intensity, yielding a blue that is lively without losing transparency, and the careful orientation of the pavilion facets moderates pleochroism so the most desirable hue dominates when the stone is set. The mixed brilliant faceting pattern creates a balanced combination of brilliance, controlled flashes of color, and persistent scintillation under movement, characteristics that give this Ceylon sapphire a sparkle that is distinct from pavings or step cuts, and a presence that reads both elegant and technically optimized for light performance. The Natural Sapphire Company offers this gem for those seeking a technically excellent, visually expressive sapphire where structural qualities and skilled cutting produce a consistently remarkable display of light.