1.37 Ct. Bi Color / Parti Sapphire from Africa

This transparent 1.37 carat pear shape bi color or parti sapphire combines precise proportions and notable weight to create both aesthetic impact and market rarity, from The Natural Sapphire Company. The stone measures 8.95 by 6.20 by 3.25 millimeters, with a depth to average dimension ratio of approximately 42.9 percent, a proportion that balances face up presence with optical performance. The cutting style is faceted, executed as a mixed brilliant cut with a brilliant facet arrangement on the crown and a modified pavilion configuration, which preserves the parti color zoning while maximizing scintillation. The intense color intensity reads as strong saturation across two distinct tones, and the excellent polish enhances facet reflection, producing crisp light return and well defined facet outlines. Clarity is graded as very slightly included evaluated at eye level, indicating minimal, well distributed inclusions that do not materially affect brilliance or durability, and the stone has been heat treated to stabilize and intensify the color, a standard and well controlled enhancement for sapphires originating from Africa.

The 1.37 carat weight is a critical driver of this sapphires value and rarity, especially for parti color material in a pear shape. Carat weight is not simply a measure of size, it is a determinant of price per carat as stones cross key weight thresholds, and parti sapphires with intense color and clean eye level clarity above one carat are comparatively scarce in the rough, requiring careful yield management during cutting. The cutter retained weight while achieving an efficient mixed brilliant facet scheme, a technical trade off that preserves color zoning and maximizes face up spread, making the stone appear larger than its carat alone suggests. For the technically minded buyer this piece offers a combination of measurable attributes, including exact dimensions, a calculated depth ratio, and a cutting philosophy that prioritizes both optical performance and color integrity, all supported by excellent polish and a professional heat treatment. For collectors and custom jewelers seeking a distinctive parti sapphire that will wear well in rings or pendants, and that reflects the craftsmanship standards of The Natural Sapphire Company, this 1.37 carat pear provides a rare intersection of size, color intensity, and cutting quality.