1.12 Ct. Bluish Green Sapphire from Montana

This Montana sapphire is a transparent, oval shape gem weighing 1.12 carats, with exact dimensions of 6.54 x 5.18 x 4.21 mm, and it displays a refined mixed brilliant cut that marries a faceted step crown with a brilliant pavilion to optimize both color saturation and return of light. The cutting geometry was executed to maintain a balanced table and depth relationship, preserving face up spread while concentrating the intense bluish green hue towards the table, and the excellent polish enhances facet junction crispness and surface luster so that each triangular and kite facet reads with clarity against the stone plane. The clarity grade is very slightly included as evaluated at eye level, which in practice means that the stone remains optically transparent with inclusions confined to discrete planes and pinpoint crystals that do not interfere with the overall window of light through the table. This sapphire has been heat treated to stabilize and intensify the bluish green color, and the origin is Montana, a provenance that is consistent with the gem habit, distribution of inclusions, and the cool to slightly teal tonal balance typical of that locality, all documented and represented by The Natural Sapphire Company.

The inclusion suite in this specimen gives it an unmistakable signature, consisting primarily of oriented acicular inclusions, fine silk, and very small crystal bodies aligned along growth directions, with intermittent healed feathering confined to internal platelets. The acicular needles are fine and often occur in parallel bundles, producing a subtle silk that gently diffuses light without clouding the stone, and when viewed under magnification they articulate growth direction and crystal habit, providing a fingerprint that is both diagnostic of natural formation and evocative of Montana sapphire typology. Occasional minute crystal inclusions are present, giving localized points of internal reflection that can scintillate when the gem is tilted under direct light, and microscopic two phase inclusions are seen sporadically within negative crystals, indicating trapped fluid and gas at formation and lending an internal microtopography unique to each crystal. Growth zoning is observable as delicate banding in the body color, with the bluish green hue sometimes concentrating in discrete zones and then dispersing through the mixed facet geometry, adding vibrant depth to the face up appearance and creating subtle color dynamics that change with orientation.

From a gemological and aesthetic perspective, the interplay between the mixed brilliant faceting scheme and the inclusion pattern is deliberate and complementary, the combination of a brilliant pavilion and step influenced crown creates controlled facet apertures that allow the silk and aligned needles to enhance color saturation without creating obvious opacity, and because the inclusions are very slightly included at eye level the stone reads as clean and lively to the naked eye while still carrying natural identifiers under loupe examination. Heat treatment in this case has been applied conservatively to deepen the bluish green tone and homogenize localized zoning, it has not removed the characteristic acicular alignment or the minute crystal inclusions that authenticate natural origin, and polish quality ensures that surface light return is maximized, making the internal inclusion features appear as deliberate facets of the gemstone personality rather than detracting flaws. The oval proportions at 6.54 x 5.18 mm yield a pleasing length to width ratio that spreads the color evenly across the table, while the 4.21 mm depth retains structural stability for mounting and promotes a lively balance between brilliance and color intensity.

For the technically minded buyer who appreciates provenance and internal morphology, this Montana sapphire presents a compelling combination of precise cutting, robust color, and an inclusion fingerprint that is both diagnostic and aesthetic, it will mount well in a setting that favors table up color, such as a low profile bezel or a closed halo that concentrates light into the crown facets without overwhelming the natural internal features. The very slightly included clarity grade means routine wear will not expose structural vulnerabilities, although standard gem care is advised to preserve the excellent polish and to prevent surface abrasion, and the heat treatment history is stable and consistent with trade practice for improving color in natural sapphires. The Natural Sapphire Company offers this gem with full disclosure of origin and enhancement, and we welcome technical inquiries about the inclusion map, facet diagram, and recommendations for settings that highlight the bluish green signature and the unique internal architecture that sets this stone apart from more homogenized material.