0.85 Ct. Bi Color / Parti Sapphire from Montana

This listing describes one transparent 0.85 carat oval bicolor, parti sapphire, with precise dimensions of 6.20 x 5.30 x 3.35 mm, originating from Montana. The stone is faceted with a mixed brilliant cut, presenting a balanced combination of table and pavilion facets that optimize light return. The oval outline provides a generous face up area relative to its weight, and the dimensions given articulate the stone proportions as suited to a bold center presentation in rings, pendants, and other standalone settings. The transparency and careful faceting allow the internal color distribution and flash to be clearly visible at normal viewing distances, making the piece immediately observable and characterful as a statement gem.

Clarity is graded as very very slightly included, evaluated at eye level, which indicates minimal internal features that do not detract from the gem presence when mounted. At this clarity grade, inclusions are typically minor and serve to confirm natural origin while preserving overall visual impact. The excellent polish contributes to crisp facet junctions and smooth facet planes, which enhance both scintillation and overall brilliance. The medium color intensity provides a balanced saturation that is neither pale nor overwhelmingly strong, and the bicolor, parti nature produces an interplay of tones that read differently with changes in angle and lighting. These combined attributes support a clear, lively appearance under typical daylight and artificial illumination.

The mixed brilliant cutting style, executed to emphasize symmetry and optical performance, results in consistent light return and an engaging pattern of fire and sparkle across the stone table. The depth of 3.35 mm, in relation to the diameter measures, yields an efficient depth profile that maximizes face up presence while maintaining secure girdle proportions for setting. Oval shapes are particularly effective as focal stones because they elongate the visual plane and draw attention without requiring a larger carat weight to achieve impact. Given the 0.85 carat weight and the specified proportions, this sapphire will occupy a prominent position in any design where size and clarity are prioritized, including solitaire ring designs, bezel mounted pendants, or halo settings that accentuate the bi color characteristics.

This sapphire has been heat treated, an established and stable enhancement used to improve color and clarity, and the treatment is disclosed in accordance with professional standards. The Montana origin contributes to the gem profile, as sapphires from this region are known for distinctive color ranges and good crystal quality. The Natural Sapphire Company documents the stone specifications and provenance as part of its quality controls, and the gem is presented with objective measurements and grading notations for purchaser evaluation. For jewelry manufacturing and long term wear, standard care recommendations include routine inspections of the setting, avoidance of harsh chemical exposure, and professional cleaning as needed to preserve polish and optical performance, ensuring the stone remains an effective and enduring statement piece.