1.64 Ct. Green Sapphire from Montana

This exceptional transparent green sapphire weighs 1.64 carats and presents a precise fancy shape with exact dimensions of 7.49 by 8.13 by 3.23 millimeters, offered by The Natural Sapphire Company. The gem has been fashioned with a designer cut that produces a distinct starburst motif across the crown, the result of carefully calibrated pavilion and crown facet angles that control light return and internal reflections. At a medium color intensity the green hue reads consistently through the face up view, with a pleasing balance between saturation and brightness that allows both green body color and white light return to coexist. Clarity is graded as very slightly included when evaluated at eye level, with inclusions that do not interrupt the overall transparency or scintillation pattern, and the polish is rated excellent which enhances facet crispness and edge definition. This sapphire is reported as natural with no enhancement, a detail that preserves its material integrity and collector appeal, and the origin is Montana which contributes distinct provenance and geological interest for informed buyers.

From a gemological perspective the designer faceting on this stone emphasizes optical performance through controlled facet proportioning and symmetry, resulting in lively scintillation and directional light dynamics that change as the stone is moved. The pentagonal outline and starburst arrangement of the crown facets function to partition light into distinct beams, improving perceived size or spread when viewed face up, a useful characteristic for a 1.64 carat stone. The pavilion geometry is configured to complement the shallow profile, the 3.23 millimeter depth producing a strong face up presence relative to the footprint, while still maintaining sufficient pavilion volume to preserve internal light return and minimize windowing. At eye level the clarity characteristics remain minor, allowing the interplay of facet reflections to dominate the visual experience. The excellent polish contributes to sharp facet intersections and minimized light leakage, and the absence of heat or other enhancements means the stone demonstrates its natural chromophore distribution, a factor that connoisseurs value for long term rarity and stability.

For a generational heirloom, material and craftsmanship considerations converge to ensure this Montana green sapphire will endure both physically and aesthetically. Sapphires are corundum with a hardness of nine on the Mohs scale, offering exceptional resistance to abrasion for daily wear, and the stone should be securely mounted with settings that protect the girdle and corner points of the fancy profile. Recommended approaches include a low bezel with custom scalloping to follow the pentagonal outline for maximum protection, or a well executed prong setting using four or five proportioned claws to allow light performance while controlling impact risk, fabricated in durable metals such as platinum or 18 karat yellow gold to complement the green tone. The designer cut and excellent polish demand a skilled setter who will ensure facet alignment and table orientation sit true to the viewer, and leaving access for periodic cleaning and inspection will maintain brilliance through multiple generations. Documentation of origin and enhancement status should accompany the piece for provenance, and professional appraisals and detailed care instructions will facilitate insurance and legacy transfer. With thoughtful setting design, routine professional maintenance, and the natural durability and untreated origin of the gem, this 1.64 carat Montana green sapphire can function as a signature family jewel, an object of technical and sentimental value to be preserved and admired by future generations.