2.57 Ct. Bi Color (Peacock) Tanzanite from Tanzania

This specimen is a transparent 2.57 carat cushion shape bi color peacock tanzanite offered by The Natural Gemstone Company, originating in Tanzania. The stone measures 8.03 x 7.95 x 5.49 mm, and its mixed brilliant cut is executed to optimize optical performance. Color intensity is evaluated as intense, with a bi color distribution that shifts between blue violet and teal green depending on viewing angle. Clarity is described as very slightly included when evaluated at eye level, indicating minor internal characteristics that do not materially impair transparency or visual appeal. The gem has received heat treatment to develop its characteristic violet and blue tones, and polish is graded excellent, producing sharp facet junctions and a clean surface plane.

The geometric faceting of this cushion form is a primary determinant of its light performance, and this stone displays a deliberate combination of step and brilliant elements that produce strong internal reflection and dynamic scintillation. The mixed brilliant cut integrates a faceted crown arrangement that disperses light into many small flashes, with a pavilion that uses brilliant style facets to return light efficiently to the eye. The result is a pronounced interplay of brilliance and fire, coupled with well defined contrast patterns that change with angle and lighting. Measured depth is 5.49 mm against an average girdle diameter of approximately 7.99 mm yielding a depth ratio of approximately 68.7 percent, a proportion that supports both face up presence and effective light return. The cushion outline with softly rounded corners provides a broad table area that showcases the gem face up while the faceting architecture below the girdle manages light paths to emphasize the bi color pleochroic character inherent to tanzanite.

In practical terms the stone presents as a versatile center gem suited to a range of settings where its geometric faceting and intense color can be displayed. The broad table and mixed facet scheme favor open settings such as four prong or bezel styles that allow light to enter the crown freely, and the stone size and shape read comfortably on a finger as shown in accompanying scale images. The very slightly included clarity grade and excellent polish support faceting contrast without distraction from internal features, and the heat treatment is a standard and stable enhancement used to bring out the ideal blue violet and teal tones. For clients and makers seeking a tanzanite with defined geometric faceting that maximizes light play while retaining natural origin and clear documentation of enhancement, this 2.57 carat cushion peacock tanzanite from Tanzania is a technically refined option. The Natural Gemstone Company can provide additional viewing images and measurements upon request to assist with setting design and appraisal.