1.90 Ct. Bi Color Sapphire from Madagascar

This 1.90 carat emerald cut bi color sapphire measures 7.88 x 5.90 x 4.18 mm, and it embodies a marriage of precise geometry and natural color zoning. The emerald cut is executed as a classic step cut with long rectangular facets on the crown and parallel concentric steps on the pavilion, including truncated corners that reduce stress concentration while enhancing symmetry. The cutter oriented the table and pavilion to maximize color bifurcation along the length of the gem, producing a distinct yet harmonious bi color effect that reads as deep bluish teal transitioning to a vivid bluish green under directional light. Clarity is graded as very slightly included at eye level, with inclusions that are minute and strategically positioned to avoid interrupting the light paths through the step facets. Polish is excellent, with facet junctions and facet planes finished to optical clarity, delivering crisp facet reflections and controlled diffusion. The gem is untreated, with no enhancement, allowing the Madagascar origin to express itself naturally, and the vivid color intensity confirms a strong chromium and iron balance that yields saturated tones without artificial alteration.

The journey of this sapphire is a narrative of geological provenance and human craftsmanship, starting in the alluvial deposits of Madagascar where seasonal rivers concentrate corundum crystals. Skilled miners recovered the rough with minimal disturbance, then a lapidary team evaluated crystal habit and internal zoning, choosing an emerald cut to preserve weight while revealing the bi color character inherent in the rough. The cutting process included careful preforming, progressive faceting to develop step planes, and iterative polishing for ideal luster, all under controlled lighting to ensure color presentation in common viewing orientations. The Natural Sapphire Company authenticated the gem, documenting origin, weight, measurements, clarity observations, and the absence of enhancements, then prepared it for market presentation with calibrated photography and a detailed report for discerning buyers. For connoisseurs who value technical precision, provenance, and natural color, this untreated Madagascar bi color sapphire offers a measured balance of optical performance, material integrity, and aesthetic versatility, ready to be set into a design that respects its geometric lines and chromatic complexity.