1.55 Ct. Blue Sapphire from Madagascar

This transparent 1.55 carat blue sapphire presents a refined balance of size and clarity, sourced from Madagascar and offered by The Natural Sapphire Company. The stone measures 6.22 by 6.07 by 4.43 millimeters, displaying a light color intensity that reads as a delicate, true blue in varied lighting conditions. Clarity is graded as very slightly included, evaluated at eye level, which preserves visual purity while offering natural character. The piece has undergone standard heat treatment to optimize its color, and the polish is graded excellent, creating crisp facet junctions and a smooth surface that contributes directly to its overall brilliance. The radiant cut, with its distinctive mix of trimmed corners and a pavilion that balances deep and shallow facets, is central to the gem’s optical performance.

The radiant cut on this sapphire amplifies its inherent reflective qualities by combining the directional return of step facets with the lively dispersion of brilliant style facets. The crown facets are proportioned to capture and refract incident light across multiple planes, while the pavilion facets act as a controlled mirror, redirecting light back through the crown to create both broad flashes of color and concentrated points of sparkle. The trimmed corners reduce light leakage that can occur in square shapes, improving durability and producing a more uniform face up appearance. This hybrid faceting pattern enhances both brilliance and scintillation, allowing the stone to exhibit a persistent internal glow, and a balanced play between bright highlights and softer, color rich areas.

Measured proportions influence how light is managed within the sapphire, and this specimen’s dimensions yield a depth that supports strong light return and lively scintillation. Using the average of the length and width as a reference, the depth measures approximately seventy two percent of the face dimension, a proportion that promotes multiple internal reflections without creating excessive darkness at the center. The modest table area preserves color saturation while permitting ample light to enter and interact with the pavilion facets, producing a pleasing distribution of light across the face of the gem. Excellent polish ensures the facet planes act as clean optical surfaces, minimizing diffusion and maximizing specular reflection, which in turn heightens apparent brightness and sharpness of each facet face.

In practical terms this radiant cut sapphire is well suited to a variety of settings that emphasize its optical strengths, with prong and open halo designs allowing maximum light access, and bezel settings offering a secure option while still showcasing the gem when designed with thoughtful open gallery work. The heat treatment applied to this Madagascar sapphire is a stable, widely accepted enhancement that improves color while preserving the material’s durability for everyday wear. For those prioritizing refined optical performance, the combination of radiant faceting, very slightly included clarity, light color intensity, and excellent polish results in a gem that reads as airy and luminous in hand, as the accompanying reference photos demonstrate on a finger. The Natural Sapphire Company presents this stone with full disclosure of its characteristics, suitable for custom commissions or elegant, minimalist mounts that let the cut and light do the visual work.