1.72 Ct. Bluish Green Sapphire from Montana

This 1.72 carat fancy shape bluish green sapphire from The Natural Sapphire Company presents an exceptional combination of size, color, and craftsmanship. Measuring 6.50 by 6.42 by 4.81 millimeters, this stone has been cut into a mixed brilliant cut to maximize both scintillation and color return. The cut proportions allow the vivid bluish green hue to saturate the table while the pavilion facets disperse light, creating lively fire and depth. The polish has been evaluated as excellent, which enhances surface luster and ensures that light flows cleanly across the facets. For an educated buyer who values both aesthetic performance and technical quality, this sapphire offers a confident balance of brilliance and rich color, making it suitable for both classic and contemporary jewelry designs.

Color and origin are central to this stone’s appeal. This sapphire exhibits vivid color intensity, a highly desirable level of saturation that reads as rich bluish green in varied lighting. Montana sapphires are prized for their unique and often complex colors, and this gem is a fine example of that regional character. Stones from Montana can display a mix of teal, green, and blue tones that are less commonly found in other sources, which makes them especially collectible to connoisseurs who appreciate provenance. The heat treatment disclosed for this sapphire is a standard and widely accepted enhancement in the industry, used to stabilize and intensify color and to improve overall clarity. Heat treated sapphires are considered stable under normal wear, and full disclosure of this treatment is an important factor in ethical purchasing and valuation.

Clarity is graded as slightly included, evaluated at eye level, and this has specific implications for both appearance and value. Slightly included at eye level means that there are small internal features that can be seen with the unaided eye under close inspection, but these do not overwhelm the gem or significantly interrupt light performance. For many buyers, these minor inclusions contribute to the gem’s natural character and offer reassurance of authenticity, since completely inclusion-free natural sapphires of this color and size are rare. From a durability perspective, these inclusions are not indicative of weakness or imminent fracture, especially in a corundum species gemstone of this quality. The excellent polish further minimizes the optical impact of any inclusions, preserving surface smoothness and enhancing the perceived clarity when mounted and viewed in typical jewelry settings.

Durability is a key consideration for any fine gem, and sapphires rank very highly on the Mohs scale of mineral hardness. Sapphire is corundum, and it rates 9 on the Mohs scale, second only to diamond which rates 10. By comparison, topaz rates 8 and quartz rates 7. This high hardness translates into strong resistance to scratching and abrasion during everyday wear, which is why sapphires are commonly chosen for engagement rings and other frequently worn pieces. The mixed brilliant cut and compact dimensions of this 1.72 carat stone also make it less prone to chipping than large, shallow stones with extended facets. For long term maintenance, routine care with warm soapy water and a soft brush will keep the gem clean and sparkling. Because the stone is heat treated only and does not carry fracture filling or other unstable treatments, it is generally safe for ultrasonic and steam cleaning, although a professional jeweler should always inspect any setting for surface reaching fissures before recommending those methods.

Why this sapphire represents a smart purchase for an informed buyer comes down to a combination of measurable attributes and provenance. The vivid bluish green color and Montana origin confer both aesthetic distinction and collecting interest, while the mixed brilliant cut and excellent polish maximize visual performance. The 1.72 carat weight and the precise dimensions make it versatile for a range of settings, from a refined solitaire to a more intricate design where the gem serves as a striking focal point. The clarity grade of slightly included at eye level offers a transparent and realistic expectation of appearance, and the disclosed heat treatment aligns with industry norms for color enhancement and stability. At The Natural Sapphire Company we prioritize accurate disclosure and gemological integrity, providing buyers with the technical information needed to assess durability, care requirements, and long term value, so that the final purchase is both beautiful and informed.