1.62 Ct. Blue Sapphire from Ceylon (Sri Lanka)

This 1.62 carat cushion shape blue sapphire measures 6.36 by 6.35 by 4.49 mm, and it combines a mixed brilliant cut with a disciplined facet architecture to maximize optical performance. The stone is transparent with a clarity grade of eye clean, evaluated at eye level, and it presents a vivid color intensity with an excellent polish. Origin is Ceylon Sri Lanka, and enhancement is heat treated to improve clarity and color uniformity. The result is a gem with an even, saturated blue and crisp facet lines that encourage strong light return and lively visual contrast.

The exceptional sparkle of this sapphire is a direct result of its material properties and the precision of the cut, both of which are described and verified by The Natural Sapphire Company. As corundum, the sapphire benefits from a relatively high refractive index and modest birefringence, which together enhance light refraction and create distinct zones of bright return and contrasted depth. The mixed brilliant cut pairs a faceted crown that disperses and scintillates with a pavilion architecture that directs photons back through the table and crown, creating a balance of pinpoint scintillation and broader flashes. The cushion outline, with its softened corners and balanced table to depth proportions, concentrates these optical effects into lively, evenly distributed sparkle. Because the clarity is eye clean, there is minimal internal obstruction to interrupt light paths, and the excellent polish ensures sharp facet junctions, which preserve the crispness of each flash. Heat treatment has further reduced minute silk and improved transparency, allowing the stone to project its vivid blue with exceptional clarity and brilliance. The combination of material, cut, clarity, and finish produces a sapphire whose sparkle reads as both intense and nuanced, offering bright, well defined flashes under point light and a rich, saturated glow in broader illumination. This gem exemplifies the technical and aesthetic standards that buyers expect from The Natural Sapphire Company.