1.63 Ct. Bluish Green Sapphire from Montana

This 1.63 carat oval sapphire from Montana, presented by The Natural Sapphire Company, combines measured proportions with precise craftsmanship to reveal its bluish green personality. The gem measures 8.45 by 6.13 by 4.16 millimeters, creating a length to width ratio of approximately 1.38 which produces a balanced, elegant oval outline. The depth of 4.16 millimeters relative to the average diameter yields a total depth near fifty seven percent, a range that favors optimal interplay between light return and face up spread for mixed cut sapphires. The hue presents a medium color intensity, and because this stone is unenhanced, the color and saturation are entirely natural, offering the authentic visual character associated with Montana sapphires.

The mixed brilliant cut employed in this sapphire is a deliberate synthesis of pavilion and crown geometry, designed to maximize internal light performance while maintaining pleasing proportions. The crown uses multiple kite and star facets that act to refract and disperse incoming light, while the pavilion facets are arranged in a brilliant style to return light back through the crown. This configuration increases both brilliance and scintillation by creating numerous internal reflections and high contrast facet junctions. The oval outline also concentrates light along the long axis, producing dynamic flashes as the stone is tipped and turned, and the interplay between the crown facet angles and pavilion depths is optimized to maintain uniform color distribution across the table.

Clarity has a direct influence on optical behavior, and this sapphire is graded as very slightly included when evaluated at eye level, meaning the internal characteristics are minimal and do not materially obstruct the principal light paths. The near transparency allows for clean transmission of light, allowing the mixed brilliant facet pattern to develop strong, crisp return flashes and to reveal subtle dispersion without significant fogging. An excellent polish on all facet planes further contributes to this effect by producing mirror like facet surfaces, reducing surface scattering and preserving the integrity of each reflection. The result is a stone with controlled contrast patterning, where bright facets alternate with dark facet windows to produce lively scintillation and a refined play of light.

From a setting and design perspective, the measured proportions and optical performance of this Montana sapphire provide flexibility for several mounting approaches that accentuate the cut driven light performance. A slightly raised claw setting will permit light to enter and exit the pavilion freely, accentuating brilliance and cross table flashes. Conversely, a bezel that leaves the pavilion exposed can emphasize the stone s depth and color saturation while still allowing the mixed brilliant geometry to operate effectively. Because the stone is unheated and unenhanced, collectors and connoisseurs will appreciate the preserved natural state and the subtle regional character synonymous with Montana origins, combined with the technical excellence delivered by the cut and polish. The Natural Sapphire Company is pleased to present this precisely cut, naturally colored sapphire for clients who value measured proportions, exacting facet work, and transparent provenance.