5.01 Ct. Bi Color / Parti Sapphire from Ceylon (Sri Lanka)

This Ceylon origin, C.Dunaigre certified, bi color parti sapphire presents as a transparent 5.01 carat emerald cut, with exact dimensions of 10.56 x 7.21 x 6.05 mm, making it an exceptional candidate for precision set custom jewelry. The cutting style is fully faceted, employing classical step facets on both the crown and pavilion, which enhance the stone's plane color transitions and linear light return. The emerald cut geometry yields a broad table and parallel facet planes, providing controlled scintillation and clear visibility into the stone, attributes that are especially valuable for designers and setters who prioritize color zoning and orientation. Clarity is graded as eye clean at typical viewing distances, permitting minimalist mounting options that emphasize the stone itself, while the medium color intensity across the blue and yellow zones maintains good saturation without veiling, allowing metal choice to influence overall warmth and perceived hue. The excellent polish produces crisp facet junctions and clean facet reflections, and the sapphire has been heat treated according to standard trade practice, a disclosure confirmed by the accompanying C.Dunaigre report, and cataloged in the lab color classification as Blue and Yellow.

For custom work, the 10.56 by 7.21 millimeter footprint is large enough to command presence, while maintaining proportions that suit rings, pendants, and bespoke cocktail pieces without requiring excessive gallery depth, the 6.05 millimeter thickness supporting secure bezel and prong options alike. The emerald cut, with its elongated rectangular outline and truncated corners, simplifies setting geometry, enabling tight bezel walls or four corner prongs to protect the corners and preserve the integrity of the step facets. Designers can exploit the linear facet architecture to align the color split along the long axis, ensuring the bi color effect reads consistently in face up orientation, or choose transverse orientation to create contrast across the finger. Metal selection and mounting technique will materially affect perceived color balance, with warmer alloys enhancing the yellow field and white metals emphasizing the blue. The Natural Sapphire Company presents this sapphire as a precision ready, certified material, ideal for clients and artisans seeking a technically transparent description and a stone that integrates cleanly into finely crafted bespoke settings.