1.12 Ct. Bi Color Sapphire from Madagascar

This transparent bi color sapphire presents itself as a precisely measured collector grade gem, weighing 1.12 carat, with dimensions of 6.08 x 5.01 x 3.86 mm. Cut into a classic emerald cut profile, the stone displays the elongated rectangular table and step faceting geometry that define this style. The gem exhibits intense color intensity across its body, with deliberate bi color zoning that is presented cleanly within the emerald cut planes. The overall proportions and symmetry were maintained to industry exacting standards to balance brilliance and depth, and to optimize the way the sapphire presents color when viewed face up and in different orientations.

From a faceting perspective this emerald cut bi color sapphire was executed to emphasize broad step facets on both crown and pavilion, creating expansive optical planes that magnify the bi color transition without breaking it into distracting flashes. The crown facets are shallow enough to preserve color saturation beneath the table, while the step facets on the pavilion were calibrated to avoid excessive windowing and to promote controlled light return. The table facet is proportioned to present a stable face up color, and the corner cut geometry for this emerald cut was minimized to preserve maximum weight and to enhance the linearity of the color zones. The result is an elegant interplay between directional pleochroism inherent to corundum and the stone architecture, allowing the wearer to observe distinct but harmonious color phases as the gem moves.

Clarity assessment was performed at eye level by trained gemologists and the stone received a clarity grade of very slightly included, evaluated at eye level. In practical terms this means the minute internal features are not immediately distracting to unaided vision and are consistent with natural growth patterns. The inclusion scene contributes to light diffusion in a manner that softens facet transitions without compromising lustre. Polishing was completed to an excellent standard, resulting in crisp facet junctions and mirror like facet surfaces that maximize specular reflection. The sapphire is confirmed as no enhancement, meaning it has undergone no heat treatment, diffusion, or other common color modifying processes. This untreated status, combined with the intense natural color and the precision emerald cut, makes this stone particularly desirable to collectors and connoisseurs who require verifiable natural origin and intact crystal chemistry.

The journey from Madagascar to market for this sapphire is a controlled sequence of technical decisions and artisanal intervention. The rough was sourced from a known deposit in Madagascar, where initial extraction is followed by sorting under daylight matched conditions to identify material with consistent bi color zoning and structural integrity suitable for precision cutting. Orientation was determined taking into account the crystal axes and pleochroic directions, ensuring that the eventual emerald cut would present the bi color split in the most aesthetically and technically favorable manner. During cutting the stone underwent staged operations including sawing to remove extraneous matrix, bruting to establish the basic outline, preforming to align the planes of color with the facet architecture, and step faceting on specialized laps to maintain even facet thickness. Diamond abrasives and high pressure polishing regimes were employed to achieve the excellent polish grade required for high end corundum, and the final inspection included microscopic analysis and spectroscopy to confirm natural trace element signatures and the absence of treatment.

As part of our standard protocol at The Natural Sapphire Company the finished gem was evaluated and documented by our gemological team. Measurements and weight were recorded precisely, and images were taken under controlled lighting to illustrate the face up color and bi color transition. A written provenance statement accompanies the gem, noting Madagascar origin, the untreated status, the emerald cut proportions, the clarity grade of very slightly included as evaluated at eye level, and the excellent polish. For jewelers and clients considering settings we recommend mounting approaches that emphasize linearity, such as channel or bezel settings that preserve the visibility of the step facets and the bi color gradient. Because the stone is untreated and exhibits intense natural color, it commands a premium in the market and benefits from designs that allow maximum light interaction without obscuring the table or crown facets.

This emerald cut 1.12 carat bi color sapphire is offered as an example of what meticulous sourcing, technical cutting, and strict documentation can produce. It is a gemstone that rewards close inspection, with a faceting scheme that harmonizes with its natural pleochroism and a clarity profile that retains character without compromising visual purity. Whether destined for a bespoke ring, a collector cabinet, or an investment portfolio, this sapphire brings the traceable origin and artisanal craft that discerning buyers seek. When you acquire this gemstone you are engaging with a process that begins at the mine in Madagascar and continues through ethical sourcing, precision lapidary work, and rigorous gemological verification by The Natural Sapphire Company.