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

When you are searching for the one gemstone that will end your quest for rarity, beauty, and enduring value, this gem answers with confidence. Offered by The Natural Sapphire Company, this is a GIA certified bluish green 4.06 carat asscher octagon shape bi color parti sapphire, cut in a faceted asscher style that measures 8.47 x 8.32 x 6.00 millimeters. The stone displays intense color intensity, a clarity grade of very slightly included evaluated at eye level, and an excellent polish. Importantly for collectors and discerning buyers who demand provenance and purity, this sapphire is natural and shows no enhancement, and its origin is Ceylon Sri Lanka. Whether you are designing an engagement ring that must stand apart from every other ring in the room, or you are a collector looking to add a rare untreated partitioned sapphire to your cabinet, this gem arrives fully documented, fully honest, and ready to be set or treasured as is.

The visage of this sapphire is a study in refined complexity, with bluish and green tones that sit in a pleasing but striking balance across the table and crown. The asscher cut, traditionally admired for its stepped pavilion and square octagonal outline, here creates a controlled mirror like effect that emphasizes depth rather than scattering every wavelength of light. In practice that means flashes of teal and sea green play across the facets as you move the stone, while deeper blue cores open up in certain orientations because this is a parti sapphire that shows multiple colors in one clear, transparent crystal. The excellent polish enhances every facet edge, ensuring sharp facet junctions and consistently lively facet reflections. With a face up that is generous for its weight at 4.06 carats and exacting dimensions of 8.47 by 8.32 by 6.00 millimeters, the stone reads large in hand and shows a pleasing pavilion height that balances brilliance and color depth. The clarity grade very slightly included evaluated at eye level means that at normal viewing distances the stone reads clean, and the minor inclusions present do not distract from the gem quality or its light performance.

When you compare this ruby family member to more commonly encountered gemstones, its distinction becomes clear. Diamonds, for example, are unrivaled for dispersion and spectral fire, and they scatter light into many colors thanks to a higher refractive index. Common blue sapphires typically emphasize saturated blue, and emeralds and aquamarines offer their own signature color intensity but tend to be either heavily included or treated for clarity and color. This Ceylon parti sapphire achieves its own kind of brilliance through a marriage of intense, natural color and a precise asscher faceting that prioritizes color dance and contrast rather than raw scintillation. The sapphire retains a strong light return and vivid internal flashes because corundum refracts light in a way that rewards skilled cutting, and the stone shows pleochroism so that its color shifts subtly from bluish to greenish depending on the angle of observation. That dynamic color behavior makes the gem more engaging across everyday wear than many uniformly colored stones. Add to this the fact that the sapphire is untreated, and you have a gem whose presence and hue are the product of geology rather than human alteration, a quality that collectors and boutique buyers prize above all.

If your need is an unforgettable engagement gem that communicates uniqueness and lasting value, or if you are a collector who seeks provenance, natural color, and expert cutting, this sapphire is the perfect solution. The Natural Sapphire Company stands behind every descriptor and every certificate, and this gem arrives with GIA documentation that confirms its weight, origin, and natural state. Because it is untreated, the stone carries both aesthetic and market advantages, and because it is asscher cut with an excellent polish, it will sit splendidly in a custom setting designed to enhance the interplay of teal, blue, and green. We invite you to imagine this sapphire at the center of an engagement ring, its bi color character catching the light as two souls move together, or to picture it in a collection case, admired for its rarity and its honest, untampered color. For personalized guidance on setting options, appraisal, or secure purchase, contact The Natural Sapphire Company and allow us to help you bring this exceptional Ceylon parti sapphire home.