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

This transparent 0.73 carat round bi color parti sapphire from Ceylon Sri Lanka combines precise proportions and natural character in a package that is particularly well suited to custom jewelry, The Natural Sapphire Company. The stone measures 5.43 x 5.40 x 3.33 mm and is faceted in a mixed brilliant cut that balances scintillation and color saturation, producing lively return of light across the crown while preserving the intense color intensity noted in our grading. Clarity is graded as slightly included when evaluated at eye level, which indicates small internal features that are observable under close inspection but do not materially diminish transparency or the overall visual appeal. The excellent polish accentuates the mixed brilliant faceting, and the fact that there has been no enhancement recorded for this gem increases its desirability for collectors and buyers who prioritize untreated natural material and documented provenance.

From a practical design perspective the round outline and the 5.4 mm table equivalent make this sapphire versatile for multiple custom applications, giving jewelry designers a reliable starting point for proportion and setting choice. As a center stone in a delicate engagement ring it will read as a classic round with a pleasing face up diameter, and when used as a pair of accents or in a cluster it integrates seamlessly with diamonds or colored gemstones because of its consistent round geometry. The mixed brilliant cut retains depth for color without sacrificing sparkle, so open settings such as prong mounts will maximize brilliance, while bezel mounts will offer modern protection without visually shrinking the stone. The sapphire being of Ceylon origin is significant, because Ceylon material is known for lively, saturated tones and a particular palette range that often displays appealing bi color or parti characteristics, adding both aesthetic interest and market value. For an educated buyer seeking a natural, unenhanced sapphire with measured proportions and documented attributes, this gem represents a meaningful option, and The Natural Sapphire Company stands ready to provide further technical details and bespoke mounting advice to ensure the finished piece meets both aesthetic and longevity expectations.