0.73 Ct. Yellow Sapphire from Montana

This transparent yellow sapphire from Montana presents a compelling technical profile, combining precise dimensions, measured proportions, and a rare color signature. Weighing 0.73 carat, and measuring 5.94 by 4.37 by 3.28 millimeters, this cushion shaped gem occupies a niche size category that is uncommon for Montana sourced yellows, especially when paired with a clear, medium light yellow tone. The medium light color intensity gives the stone a luminous, warm appearance that sits between pale pastel yellows and deeper golden tones, offering a purity of hue without the brown or green modifiers frequently seen in stones of similar locality. At eye level this sapphire is graded very very slightly included, a clarity character that ensures transparency and strong light return while preserving natural internal features that testify to its natural origin. Enhanced by routine heat treatment, this specimen presents a stable, intensified color state that is industry standard, and an excellent polish that imparts bright, mirror like facet surfaces and crisp facet junctions.

From a cutting and craftsmanship standpoint this cushion sapphire is executed as a mixed brilliant cut, a choice that marries the scintillating performance of brilliant facet geometry with controlled pavilion architecture to optimize both brilliance and face up color. The crown displays a modified brilliant arrangement with kite shaped and star facets that distribute light across the table and upper facets, while the pavilion is proportioned to encourage efficient light return and lively scintillation. The combination of the crown and pavilion angles, along with the stone depth which calculates to approximately 63.6 percent relative to the average diameter, produces a balanced table and depth relationship that preserves color saturation while maximizing brightness. The cutter has prioritized symmetry and facet alignment, evident in the uniformity of facet sizes and in the way light is refracted and reflected across the pavilion facets in the supplied images. The excellent polish enhances internal clarity perception, so that the very very slight inclusions noted at eye level remain unobtrusive and do not interrupt the stone structural integrity. The heat enhancement reported is a traditional thermal treatment intended to refine color and improve overall visual homogeneity, it does not involve surface filling or diffusion processes, and it yields a stable result suitable for everyday wear.

For designers, collectors, and knowledgeable buyers seeking a Montana yellow sapphire that stands apart by both size and color purity, this 0.73 carat cushion is an exceptional option. The cushion silhouette, combined with the engineered mixed brilliant faceting, is highly adaptable for a variety of settings, from a solitaire engagement ring that emphasizes table brilliance, to a multi stone composition where matching brilliance and consistent tone are critical. The stone’s medium light intensity permits flexibility in metal choice, pairing well with both warm yellow gold for amplified luminosity, and with white metals where the clean yellow will be perceived as a pure, soft lemon. From a market perspective, Montana yellow sapphires of this specific size class and tonal clarity are less frequently encountered than comparable stones from more prolific sources, and that relative scarcity contributes to both aesthetic and investment appeal. At The Natural Sapphire Company we prioritize thorough gemological description and careful cutting provenance, and we offer additional imaging, measured reports, and consultation to assist in design decisions or collection acquisition, ensuring that the technical qualities of each stone are fully understood and appreciated.