0.29 Ct. Bi Color / Parti Sapphire from Montana

This listing describes one transparent 0.29 carat round bi color parti sapphire from Montana, presented by The Natural Sapphire Company. The stone measures 4.03 x 4.04 x 2.67 mm and has a faceted cutting style with a mixed brilliant cut that optimizes light return for its size. The sapphire displays light color intensity with distinct color zoning that reads as cooler blue tones near the center and warmer yellow tones toward the pavilion, consistent with parti sapphire character. Clarity is graded as very slightly included evaluated at eye level, and the gem has an excellent polish that contributes to crisp facet junctions and a clear, lively appearance under direct and diffused lighting. The gemstone has been heat treated, a stable and commonly applied enhancement to improve color and clarity, and this treatment is disclosed as part of the gem description.

From a durability perspective this sapphire benefits from the inherent physical properties of corundum, which rates 9 on the Mohs hardness scale, making it one of the hardest gem materials available after diamond. The combination of high hardness and good toughness renders this stone well suited to daily wear in most jewelry types, including rings, pendants, and bracelets, when set with appropriate protective settings. The excellent polish and the mixed brilliant facet design further reduce the likelihood of surface abrasion affecting visual performance under normal wear conditions. Routine care can be accomplished with warm water, a mild detergent, and a soft brush, taking care to avoid exposure to strong chemicals and prolonged high heat. Given the stable nature of heat treatment, standard professional cleaning and inspection by a jeweler are appropriate to maintain the stone and its mounting. This Montana parti sapphire offers a balance of durable material properties, precise cutting, and a distinctive bi color appearance, suitable for incorporation into refined, day to day wearable jewelry designs.