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

This listing describes a transparent bi color parti sapphire weighing 2.04 carats, presented in an emerald cut, faceted style. The stone measures 8.08 by 5.82 by 4.51 millimeters, yielding a well balanced profile suitable for a variety of jewelry settings. The cutting style emphasizes step facets along the pavilion and crown, producing linear reflections and a stable visual plane. The overall finish is of excellent polish, and the symmetry of the emerald cut contributes to consistent light return across the table. The origin is documented as Ceylon Sri Lanka, and the treatment disclosed is heat treated, used to stabilize and enhance the stone's color characteristics. The Natural Sapphire Company provides the provenance and treatment disclosure associated with this sapphire.

Color attributes are a defining aspect of this stone, described as bi color parti, with medium color intensity. The color distribution shows distinct yet harmonious zones that range from deeper blue to softer, lighter blue areas, creating the parti effect when viewed from different angles. Emerald cuts tend to reveal color zoning more directly than brilliant cuts, and in this example the step facets produce clear banding and planes of color. The gem displays notable pleochroic tendencies, with subtle shifts in hue and saturation as the stone is rotated under light. These optical properties contribute to a composed and measured appearance, favoring designs that showcase the table and facets, such as bezel or four prong settings that allow light to interact with the pavilion and crown.

Clarity is graded as eye clean, evaluated at eye level, indicating that no inclusions are visible without magnification in normal viewing conditions. Under loupe or microscope, natural internal features are present and serve as unique identifiers for this natural sapphire. Typical inclusions seen in sapphires from Ceylon include fine rutile needles sometimes referred to as silk, tiny mineral crystals, and fine negative crystals, all of which can act as a fingerprint for the stone. These inclusions do not materially detract from the gem when observed unaided, and in many cases they contribute to the gemological story and assurance of natural origin. The heat treatment disclosed for this sapphire is a standard and widely accepted practice in the trade, applied to enhance color uniformity and stability, while preserving the gemological signatures that confirm its natural formation.

The proportions of this emerald cut are practical for use as a center stone, with a depth of approximately 56 percent relative to the length, and a length to width ratio that maintains an elegant rectangular outline without appearing overly elongated. The faceting pattern, combined with the excellent polish, produces crisp facet junctions and clean planes that interact predictably with light, enhancing the visibility of the parti color distribution rather than obscuring it. From a setting and design standpoint, the stone benefits from a mount that protects the corners and allows the table to be seen clearly, ensuring the bi color nature remains the principal visual attribute. Durability for everyday wear is consistent with natural sapphire, and routine care recommendations include avoiding harsh chemicals and high impact, and periodic professional cleaning to maintain the polish and brilliance.

Documentation and disclosure are provided with this sapphire, reflecting provenance from Ceylon Sri Lanka, a clarity grading of eye clean at eye level, a heat treated enhancement, and the measured dimensions and weight. The Natural Sapphire Company stands behind the accuracy of these technical attributes and provides detailed imagery and gemological information to support selection and setting decisions. The combination of a transparent material, emerald cut faceting, medium color intensity, and natural inclusions that serve as identifying characteristics yields a gemstone that is both technically well specified and distinctly individual in appearance.