1.31 Ct. Greenish Blue Sapphire from Montana

This offering from The Natural Sapphire Company is a transparent 1.31 carat pear shape greenish blue sapphire, with dimensions of 8.04 by 5.90 by 4.10 millimeters, and a mixed brilliant cut. The gem has a clarity grade of very slightly included as evaluated at eye level, a medium intense color intensity, and an excellent polish. The stone has been heat treated, a standard and stable enhancement applied to intensify hue and improve clarity, and its documented origin is Montana. These measured attributes define the sapphire in technical terms, and they form the basis for assessing its optical performance, setting requirements, and long term value.

The mixed brilliant cut in this pear form combines a precise brilliant facet arrangement on the crown, with a modified pavilion geometry engineered to maximize light return while maintaining color saturation. The overall proportions yield a total depth of 4.10 millimeters relative to the average of the length and width, producing a depth of approximately fifty nine percent, an intentional proportion that balances face up spread with depth born brilliance. Facet junctions are well executed, the crown facets produce crisp star and kite patterns, and the pavilion facets are configured to avoid excessive windowing or a dark keel line. The narrow to medium girdle and a well centered culet allow secure setting options without compromising the optical table, and the excellent polish ensures that facet planes are smooth and reflective, contributing directly to strong scintillation under directional light.

Color in this sapphire is technical and evocative simultaneously, described as greenish blue with medium intense saturation and an even tone across the pavilion and crown. The greenish component is attributable to a controlled presence of iron within the corundum lattice, while titanium driven chromophore interactions produce the blue component, the combined balance yielding a teal leaning blue that reads richly in a variety of lighting environments. Pleochroism is present in most sapphires and in this example the stone displays a subtle shift between more pronounced blue and slightly greener flashes as it is rotated, a characteristic that skilled cutters exploit when orienting the pavilion and crown angles. Heat treatment in this instance was applied to diminish fine silk and to stabilize the blue green balance, resulting in a cleaner eye level appearance and a more vivid face up color that communicates power and distinction when mounted.

From a craftsmanship and use perspective the sapphire is fully prepared for bespoke jewelry work, the pear outline is symmetrical with a well formed tip and rounded shoulder, providing an elegant profile for both solitaire and halo constructions. The excellent polish and careful facet alignment will respond well to open backed and bezel settings, with open back mounting favored when the objective is to maximize light transmission and vibrancy. Metal choices will alter perceived tone, with warmer metals shifting the greenish blue toward teal, and white metals emphasizing the blue component and the stone clarity. For collectors and connoisseurs who value technical refinement as a signifier of personal power, this Montana sapphire reads as a statement gem, its medium intense color and precision cutting offering the dual attributes of wearable strength and refined optical performance. For detailed provenance, cutting diagrams, or custom mounting proposals, contact The Natural Sapphire Company for consultation, documentation, and the highest standard of lapidary and design collaboration.