0.45 Ct. Bi Color Sapphire from Montana

This transparent 0.45 carat round bi color sapphire measures 4.63 by 4.68 by 2.89 mm and is fashioned in a mixed brilliant cut with an excellent polish. Originating from Montana, this stone presents a medium color intensity and a pleasing bi color balance that can shift subtly as the viewing angle or light source changes. The clarity is graded very slightly included when evaluated at eye level, indicating only minor internal features that do not materially reduce transparency or brilliance but rather attest to the natural origin of the stone. The mixed brilliant faceting combines a brilliant crown with a more step oriented pavilion to enhance scintillation while preserving weight and face up presence in a compact round shape. This sapphire has been heat treated, a widely accepted and stable enhancement in the trade that improves color while maintaining the structural integrity of this durable corundum.

For the educated buyer, the value of this gem lies in a confluence of authentic provenance, measured gemological qualities, and enduring physical characteristics. Montana sapphires are prized for their distinctive color palettes and geological history, and the bi color effect of this example makes it especially suited for bespoke settings that showcase changeable tones. The very slightly included clarity grade signals a natural origin with minimal internal features, while the excellent polish and precise mixed brilliant cut maximize light return and face up appeal. From a practical standpoint sapphires rank nine on the Mohs scale, ensuring long term wearability for rings and everyday jewelry, and the standard heat treatment is stable under normal wear and professional cleaning. When set by a skilled jeweler the proportions of this 4.63 by 4.68 by 2.89 mm round will deliver lively scintillation and a memorable play of color, qualities that continue to captivate over years and through generational wear. The Natural Sapphire Company stands behind the sourcing and grading of this stone, offering full disclosure and expertise so that buyers can appreciate both the scientific attributes and the lasting aesthetic value of this Montana bi color sapphire.