0.83 Ct. Blue Sapphire from Madagascar

This 0.83 carat oval blue sapphire carries the precise dimensions 6.12 x 4.69 x 3.35 mm, and its journey begins in the alluvial workings of Madagascar where selective hand mining yields clean, gem quality rough material. Each rough crystal destined for The Natural Sapphire Company is examined for crystal habit and zoning, then oriented to maximize color saturation and light return. This specimen was cut as a mixed brilliant, with a well calibrated brilliant crown above a modified step pavilion, a faceting strategy chosen to concentrate vivid blue saturation into the table while preserving scintillation across the crown facets. The cutter controlled pavilion angles and crown height to balance depth and spread for the given dimensions, producing an optical performance that reads as vivid color intensity under standard viewing conditions. The clarity is graded very slightly included at eye level, meaning that natural inclusions are minimal and do not disrupt the stone to the naked eye, and the excellent polish paired with careful symmetry amplifies the stone s apparent transparency and lustre.

After cutting, the sapphire received a routine and stable heat treatment, a common and accepted enhancement that optimizes hue and removes minor silk networks without compromising structural integrity. Heat treatment was applied with controlled thermal profiles to achieve a uniform vivid color intensity, and subsequent gemological checks confirm stability and permanence of the enhancement. The final gem exhibits an excellent polish and consistent facet junctions, which ensures crisp light return and predictable performance when set. At 0.83 carat in an oval format, the stone is especially well suited to refined solitaire settings, precision halo mounts, or as a calibrated center for bespoke jewellery, offering efficient pavilion depth for secure bezel or prong seating. The Natural Sapphire Company maintains provenance records from Madagascar through cutting and treatment, and provides technical details and imagery to support appraisal and setting decisions. For collectors and connoisseurs who value meticulous faceting decisions, transparent treatment disclosure, and a vivid, eye clean appearance, this sapphire represents a technically sound and visually compelling choice.