1.72 Ct. Bluish Green Sapphire from Montana

One transparent 1.72 carat fancy shape bluish green sapphire is presented, dimensions 6.50 by 6.42 by 4.81 mm. The gem displays a mixed brilliant cut that combines a faceting scheme designed to enhance both scintillation and color saturation, and an excellent polish that contributes to lively surface brilliance. This example was evaluated with a clarity grade of very very slightly included at eye level, indicating that it is effectively eye clean with only minor internal features visible under magnification. The color is described as bluish green with vivid intensity, and the stone has been heat treated, a stable and widely accepted enhancement in sapphire trade. The Natural Sapphire Company is offering this stone with full disclosure of its origin, Montana, which is relevant to both its aesthetic character and its market position.

The bluish green hue exhibited by this sapphire is notable for its rarity when considered alongside more common sapphire colors. Montana sapphires are often associated with softer teal or pastel tones, and fully saturated blue sapphires from traditional sources are more frequently encountered at this weight class. A vivid bluish green of this degree of saturation and uniformity is uncommon, and the combination of that color with a weight of 1.72 carats places this stone in a scarce category among comparable offerings. The mixed brilliant cut has been executed to maximize return of light while preserving the integrity of the color, producing a balanced presentation in which flashes of deeper green and cooler blue interact across the crown facets. The stone’s proportions, with a moderate depth of 4.81 mm relative to its diameter, support strong face up color without excessive darkening, which is particularly desirable in colored gemstones where both hue and brightness are critical to perceived value.

Beyond color and cut, the gemological attributes support both aesthetic appeal and practical use. The clarity grade of very very slightly included reflects a stone that will present as clean to the unaided eye, with inclusions that do not materially affect durability or light performance. The heat treatment disclosed is conventional and improves color without introducing instability, it is not a diffusion treatment and therefore the color is intrinsic to the corundum lattice as enhanced by controlled heating. Origin from Montana contributes provenance, as Montana sapphires occupy a discrete niche appreciated by collectors and designers for their distinctive tones. In terms of setting suitability, the size and shape lend themselves to a variety of design approaches including classic solitaire, refined halo, or bespoke mounting where the gem’s vivid bluish green tone can be showcased. The Natural Sapphire Company provides this detailed description to enable informed evaluation of the stone, with attention to the factors that make it rare among similar options in both size and color.