0.71 Ct. Bluish Green Sapphire from Madagascar

This transparent 0.71 carat round bluish green sapphire presents precise proportions and a refined finish. Measuring 5.12 by 5.12 by 3.47 millimeters, the stone is cut in a mixed brilliant style that combines the light performance of a brilliant crown with the depth retention of a step influenced pavilion, resulting in controlled brilliance and lively scintillation. The clarity is graded as very slightly included at eye level, and the polish is excellent, ensuring clean facet junctions and uninterrupted light return. Heat treatment has been applied to enhance the color stability and uniformity, and the sapphire is sourced from Madagascar, a locale known for producing material with attractive tone and saturation. The Natural Sapphire Company documents this gem with full attention to its physical and optical attributes.

The gemstone derives its distinctive sparkle from both intrinsic and faceting factors, rooted in corundum crystallography and the precision of the mixed brilliant cut. Corundum has a dense atomic arrangement and a naturally high refractive index, which means light entering the stone is bent and retained more effectively than in many other gem species, enhancing internal reflections. Faceting designed for mixed brilliant performance directs that retained light through multiple internal reflections between pavilion and crown facets, producing a balance of overall brilliance and pinpoint scintillation across the table and crown. The medium light color intensity of the bluish green hue contributes to perceived brightness without overpowering the spectrum of reflected light, allowing both flashes of white brilliance and subtle colored reflections to be seen as the stone moves.

In practical terms this sapphire combines optical efficiency with durability and wearability. With excellent polish and stable heat enhancement, the stone displays consistent light behavior under different lighting conditions, and the corundum hardness provides resistance to daily wear, making it suitable for a variety of jewelry settings. For professionals evaluating the gem, the combination of accurate proportions, very slightly included clarity at eye level, and the mixed brilliant cut results in a dynamic light performance that is both measurable and visually distinct, offering a refined sparkle that stands apart from stones of lesser optical design or lower structural density.