0.28 Ct. Bluish Green Sapphire from Montana

One transparent 0.28 carat oval bluish green sapphire, dimensions 4.95 x 3.12 x 2.28 mm, mixed brilliant cut, clarity grade slightly included evaluated at eye level, intense color intensity, excellent polish, heat treated, origin Montana. The proportions and mixed brilliant faceting yield balanced light return and scintillation for a stone of this size, the polish contributing to crisp facet junctions and surface brilliance. The slightly included clarity grade is consistent with natural origin and the gem appears clean to most observers at normal viewing distances, the transparency allowing the bluish green hue to register clearly across the crown and pavilion. The combination of intense saturation and a medium to medium dark tone produces a stone that reads as a teal to bluish green in varied lighting, and the modest size makes this sapphire well suited to a delicate ring or accent role in a multi stone setting. The Natural Sapphire Company documents the heat treated enhancement commonly used to stabilize and clarify color, and the Montana origin aligns with the regional character associated with American sapphires.

In direct hue and tone comparison to sapphires from other famous locations, this Montana sapphire leans greener than classic Kashmir examples, which are celebrated for their velvety, vivid cornflower blue and more pure blue hue. Against Burmese and Thai sapphires, which often exhibit strong blue to blue violet tones, the present stone has a clearer green component and less violet influence, resulting in a distinctly cooler teal character. Compared to Sri Lanka Ceylon stones, which frequently show bright, lively blue with lighter to medium tones and high brilliance, this Montana gem shows a deeper tone and stronger green influence while maintaining notable brilliance due to its mixed brilliant cut. Relative to Australian and Madagascan greenish blue sapphires, this example displays more transparent clarity and a slightly higher degree of facet defined sparkle, while sharing the common green bias found in those origins. These comparisons place the stone in a unique visual niche, where the intense saturation and bluish green hue reflect Montana geology, and the cut and polish enhance the gemological attributes favored in fine jewelry settings.