1.10 Ct. Orange Sapphire from Montana

This transparent 1.10 carat oval orange sapphire measures 6.05 by 5.62 by 3.77 mm, presenting a balanced and wearable size for a variety of fine jewelry applications. The gem is cut in a mixed brilliant style, combining a faceted crown that emphasizes brilliance with a pavilion geometry engineered for optimal light return. Clarity is graded very slightly included evaluated at eye level, which indicates minimal internal features that do not detract from overall visual performance. Color intensity is classified as intense, and the stone displays a vivid, warm orange hue that is characteristic of high quality Montana sapphires. The finish is an excellent polish, and the stone has been heat treated, a stable and commonly applied enhancement that refines color while preserving the integrity of the corundum crystal. The Natural Sapphire Company presents this specimen with full disclosure of its origin, Montana, which contributes to its unique tonal profile and geological provenance.

The exceptional sparkle of this sapphire stems from an interplay of intrinsic crystal properties and exacting lapidary work. Corundum, the mineral species to which sapphire belongs, has a refractive index in the range of approximately 1.76 to 1.77, a value that produces strong internal reflection and noticeable brilliance when light is returned through well oriented facets. The mixed brilliant cut amplifies this behavior by assigning a dense array of small, precisely angled facets on the pavilion and crown. These facets act as mirrors, fragmenting incoming light into numerous points of return, which creates lively scintillation across the surface. In addition, the gem exhibits modest dispersion, enabling subtle flashes of spectral color when viewed under varied lighting, while the intense base color remains pure and saturated. The depth of 3.77 mm and the overall proportions of this oval are calibrated to maximize light retention, limiting leakage at shallow angles and avoiding the dark zones that can occur in overly deep or poorly cut stones. Very slight inclusions, being small and well distributed, can serve to scatter light at microscopic scales, enriching the visual texture without diminishing transparency, and the excellent polish ensures that facet junctions remain crisp, further enhancing contrast and fire.

From a practical perspective the combination of material hardness and optical performance makes this sapphire both durable and striking in finished jewelry. On the Mohs scale corundum rates a 9, offering substantial resistance to scratches and suitability for daily wear when set appropriately. Heat treatment used to enhance the color is stable and widely accepted within the gem trade, and it does not compromise structural integrity. For optimal display of the gem s inherent brilliance, settings that permit ample light entry such as classic prong mounts or low profile open back designs are recommended, allowing the mixed brilliant faceting to perform fully. Care involves routine cleaning with warm soapy water and a soft brush, avoiding prolonged exposure to strong acids or alkalis, and professional inspection of the mount at intervals to secure the stone. The Natural Sapphire Company provides comprehensive information on provenance and treatment, supporting informed selection and long term enjoyment of this finely crafted Montana orange sapphire.