0.45 Ct. Bluish Green Sapphire from Montana

This 0.45 carat, emerald cut, bluish green sapphire is a compact and refined gem, with exact dimensions of 5.25 x 3.56 x 2.48 mm, and a depth of approximately 56 percent, giving it a pleasing face up presence. The stone is transparent, with medium color intensity that reads as a cool, refined teal under neutral lighting, and an excellent polish that sharpens facet junctions and maximizes the step cut reflections. The clarity grade is documented as very very slightly included, evaluated at eye level, which means the inclusions are minimal to the naked eye and do not interrupt the clean, geometric lines that make the emerald cut so distinctive. This sapphire has been heat treated to optimize its color, a common and stable enhancement in the trade, and it is sourced from Montana, a provenance that carries both historical cachet and modern appeal. The Natural Sapphire Company is presenting this sapphire with full disclosure of its treatment and origin, so you can evaluate its quality with confidence.

The emerald cut is an ideal choice for a stone with the clarity and color profile this sapphire exhibits, because step facets emphasize color and clarity rather than play of color or brilliance. In a well executed emerald cut, broad facets create a hall of mirrors effect that showcases the gem’s body color and internal character, so a clean, very very slightly included sapphire will exhibit a serene, consistent tone across the table. The dimensions here favor an elegant, elongated rectangle that sits low to the finger for comfortable daily wear, while the excellent polish ensures strong facet contrast and crisp light returns along the step lines. For buyers focused on proportion and face up area, the 5.25 x 3.56 mm table and controlled depth translate into an appearance that seems slightly larger than the carat weight might suggest, due to the broad table and shallow pavilion relative to round cuts.

The Montana origin adds a significant layer of value and desirability for educated buyers who care about both aesthetics and provenance. Montana sapphires are renowned for producing cooler blue tones, teals, and greenish blues that differ from the saturated cornflower blues of classic Ceylon material, and this particular bluish green is characteristic of Montana’s unique trace element balance. The presence of iron and titanium at specific concentrations influences the color palette, producing a subtle, naturalistic tone that appeals to collectors and connoisseurs who prize regionally distinctive gemstones. Historically, Montana sapphires gained recognition in the early 20th century and have maintained a reputation for ethically mined, small scale production, which often translates into a smaller supply and a premium for stones that are well cut and eye clean. Provenance matters in the market, because it links a gem to a known geological source, and buyers increasingly value the transparency and story that a Montana origin provides. The Natural Sapphire Company documents and discloses origin and treatments because those factors are central to both aesthetic appreciation and long term value.

For a thoughtful purchaser, this sapphire combines durable performance with refined character and responsible disclosure. Sapphires score 9 on the Mohs scale, which means this gem is well suited to daily wear in engagement rings and other fine jewelry, provided standard care to avoid accidental knocks and exposure to harsh chemicals. The heat treatment disclosed here is a stable enhancement that improves color in a permanent way without introducing surface coatings or unstable fills, and it is widely accepted in the gem trade when fully disclosed. In terms of design, the emerald cut emphasizes classical, understated elegance and pairs beautifully with tapered baguettes, channel set diamonds, or a clean solitaire platinum or 18 karat gold bezel that protects the stone’s girdle and highlights the rectangular geometry. At The Natural Sapphire Company we provide high resolution imagery and detailed descriptions to assist in selection, and our gem specialists can advise on setting styles and mounting choices that will best display the medium color intensity and the near eye clean clarity of this Montana sapphire.