1.10 Ct. Bluish Green Sapphire from Montana

One transparent, 1.10 carat round shape bluish green sapphire, dimensions 6.14 x 6.15 x 4.08 mm, mixed brilliant cut, clarity grade very slightly included evaluated at eye level, dark color intensity, excellent polish, heat treated, origin Montana. The proportions present as well balanced for a round mixed brilliant, the table and crown facets oriented to optimize return of light while the pavilion facets contribute to depth and scintillation. Clarity is described as very slightly included at eye level, which indicates minor inclusions that do not detract from face up appeal, and the excellent polish preserves crisp facet junctions, contributing to the overall optical performance. The heat treatment is a standard enhancement applied to improve hue uniformity and body color, and it is disclosed in keeping with industry transparency. These technical attributes are presented to enable an informed assessment of the sapphire by gemologists, jewelers, and discerning buyers, and to provide a clear baseline for consideration in a custom or finished setting.

The bluish green hue presents as a blended color balance that leans toward blue with a noticeable green component, creating a cool, forest to teal tonality depending on viewing angle and light source. With a dark color intensity, the stone exhibits strong saturation and depth, which enhances perceived richness and reduces the likelihood of looking washed out in bright light. The mixed brilliant cut combines a faceted crown similar to a standard round brilliant with a pavilion that enhances depth, this approach encourages concentrated flashes of light from the table and crown facets, while the pavilion configuration adds internal contrast and a sense of depth when viewed from the side. Facet alignment and symmetry are important to how evenly the color appears face up, and this sapphire demonstrates symmetry consistent with an even distribution of color and consistent brilliance across the table. The polishing quality contributes to surface luster, and together with the facet architecture, results in clear faceting and controlled light leakage for balanced brilliance.

Under direct daylight and North light, the sapphire shows its truest bluish green character, with the blue and green components appearing vibrant and balanced, and with bright, crisp scintillation from the crown facets. In bright midday sun the dark color intensity can deepen the center, producing a velvety core of color surrounded by brighter flashes at facet edges, this creates a pleasing contrast between body tone and facet highlights. Under warm incandescent light the stone will emphasize the green and teal aspects less than daylight, presenting a slightly warmer, deeper blue leaning appearance, with softer facet flashes and a more luminous, jewel like glow. Under cool LED or fluorescent lighting the blue component can become more pronounced, yielding cooler, more saturated tones and crisper flashes, and the mixed brilliant cut will respond with distinct specks of scintillation that are particularly visible under point lighting. In low or candlelight the sapphire retains presence due to its dark intensity, showing more subtle internal color play, gentle glows and muted scintillation, which can be particularly attractive in evening wear. When set in jewelry, the choice of metal and mounting style will influence perceived color, white metals such as platinum or white gold will tend to emphasize the blue component and brighten facet reflections, while warmer metals such as yellow or rose gold can add a subtle warming effect and emphasize the green teal nuances.

Practical considerations include setting choices that protect the girdle and pavilion while allowing sufficient light to interact with the mixed brilliant cut, a raised prong or bezel setting will offer different optical outcomes, a four prong solitaire will allow more light for maximum face up scintillation, while a bezel setting will deepen the color and present a more uniform appearance. Given the clarity grade of very slightly included at eye level, typical daily wear precautions apply, including avoiding sharp blows and exposure to harsh chemicals, routine cleaning with warm water, mild detergent and a soft brush is appropriate, and professional inspection of settings should be scheduled periodically. The heat treatment applied to this Montana sapphire is a common and stable enhancement used to improve color, it does not require special handling beyond standard care practices. The Natural Sapphire Company provides full disclosure of origin and treatment, and our documentation supports gemological verification and provenance. This sapphire is well suited for a variety of jewelry applications including center stones for engagement rings, pendants, or bespoke pieces where its color profile and mixed brilliant cut can be showcased, and it offers a combination of attractive optical performance, documented origin, and professional finishing suitable for both classic and contemporary design approaches.