1.64 Ct. Bi Color / Parti Sapphire from Montana

This pear shaped bicolor parti sapphire is a transparent, faceted gemstone weighing 1.64 carat, with precise dimensions of 8.84 x 6.48 x 4.37 mm. The cutting style is a mixed brilliant cut executed to emphasize both scintillation and color, and the polish has been evaluated as excellent, providing crisp facet junctions and lively light return. Color intensity reads as intense across the stone, with a pleasing interplay of deep blue and warm green gold tones that are characteristic of parti sapphires, and these colors are a direct result of natural variations in trace elements in the corundum matrix, commonly iron and titanium for blue tones, and iron for warmer yellow and green tones. Clarity is graded as very slightly included when evaluated at eye level, meaning that inclusions are minimal, well distributed, and do not interrupt transparency or detract from the gem's visual appeal, and the overall proportions yield an approximate depth ratio of fifty seven percent, which gives a balanced face up size while maintaining strong light performance. This sapphire has undergone a standard, disclosed heat treatment, a stable and widely accepted enhancement that improves color uniformity and clarity in a manner that is permanent under normal wear conditions.

The provenance of this sapphire is Montana, and The Natural Sapphire Company takes that origin seriously in terms of ethical and responsible sourcing. Montana sapphires are often produced through small scale and artisanal operations in a geologically unique region of the United States, and we work directly with miners and regional partners to support traceability from mine to market. Our sourcing practices prioritize transparency, responsible environmental stewardship, and fair labor standards, and we provide full disclosure of treatments and origin so that educated buyers can make informed decisions. Where possible we document chain of custody and support community reinvestment initiatives and best practices for reclamation and water management. For a conscious consumer, choosing a gem with a documented Montana origin through The Natural Sapphire Company means selecting a stone that comes with a commitment to responsible supply chain practices, and it also means having access to independent testing where requested, so the gem you select is exactly the gem you receive.

For the informed collector or buyer seeking a piece that balances rarity, beauty, and integrity, this 1.64 carat pear shaped bicolor parti sapphire represents a compelling choice. The parti coloration is inherently rare, each stone presenting a unique distribution of hues that cannot be exactly duplicated, and the mixed brilliant cut in a pear outline maximizes both the perceived size and the dynamic interplay of color as the gem is tilted under light. The very slightly included clarity grade is a strong advantage for an educated buyer because it confirms the stone is largely eye clean, preserving both transparency and structural soundness, while the excellent polish enhances brightness and resale appeal. Practical considerations for setting include a prong or partial bezel design that allows the parti coloration to read face up, and orienting the tip of the pear toward the finger or the pendant bail often shows the most flattering color transitions. Because the heat treatment is fully disclosed and stable, standard jewelry construction and routine wear will not alter the enhancement, and The Natural Sapphire Company can provide documentation and bespoke setting services to create a finished piece that reflects both your aesthetic intent and your values. In sum, this Montana bicolor parti sapphire is a technically well cut, transparently sourced gemstone, ideal for the conscious collector who values verifiable origin, responsible practices, and enduring gemological quality.