6.37 Ct. Blue Sapphire from Ceylon (Sri Lanka)

This transparent blue sapphire weighs 6.37 carats, and measures 11.39 by 8.30 by 6.50 mm. It is fashioned in an emerald cut, and displays a vivid color intensity with a clarity grade of very slightly included evaluated at eye level. The stone originates from Ceylon Sri Lanka, and has undergone heat treatment to enhance its natural tone. The cut exhibits an excellent polish, which together with the sapphires inherent transparency produces clean, well defined facet junctions and a sharply articulated table. These attributes contribute to consistent face up color and a refined presentation suited to precision settings and fine jewelry design.

The emerald cut is a step cut that accentuates the sapphires depth and color rather than maximizing dispersed sparkle. Broad parallel facets create broad flashes of light and zones of saturated blue, which emphasize the gems vivid hue and allow viewers to appreciate subtle shifts in tone. The long crown and pavilion facets act as controlled channels for light, guiding return and reflection in planes that reinforce color saturation while preserving the stones transparency. Because the clarity is very slightly included, the emerald cut reduces the visual impact of minor internal features, by directing attention to the stones even fields of color and to the mirrorlike polish of the facet planes. The excellent polish enhances specular reflection at each facet, producing crisp light returns and an orderly pattern of contrast along the step facets. In practical terms this results in a sapphire that reads as deeply colored and consistently bright, with composed flashes rather than random scintillation, and with a presence that holds in both direct and softer lighting. The Natural Sapphire Company presents this emerald cut Ceylon sapphire as a choice specimen for those who prefer a refined interplay of color depth and architectural facet design, and for settings that benefit from a gemstone with strong face up color, disciplined light performance, and a polished, elegant profile.