1.58 Ct. Yellowish Green Sapphire from Montana

From the river gravels and weathered bedrock of Montana comes a quiet story of time and patience, a journey that began long before human hands shaped it. Deep in the mountains, titanium rich host rocks gave birth to corundum crystals that waited through seasons of freeze and thaw, until water and gravity carried them into alluvial pockets where miners and prospectors would eventually find them. This particular sapphire left the earth as a transparent rough crystal, its pale green heart already suggesting a unique personality, a color that is at once gentle and arresting. At The Natural Sapphire Company we honor that journey, we carefully record provenance and we celebrate the rare instance when nature offers a tone that is both subtle and memorable, the kind of gem that tells a story when it is set and worn.

The stone is a 1.58 carat asscher octagon shaped yellowish green sapphire, with precise dimensions of 6.53 x 6.47 x 4.64 mm, an asscher cut that magnifies its crystalline geometry and opens the stone to light in a way few cuts can. Transparency is excellent, the clarity grade is very slightly included evaluated at eye level, so the gem reads clean and pure to a casual glance yet retains natural fingerprinting that confirms its authenticity and origin. Color intensity is light, a soft yellowish green that reads as early spring new growth rather than the dense jungle greens of deeper stones. Polish is excellent, each facet meeting with crisp edges and mirror like surfaces that allow flashes of light to travel across the pavilion and return a calm, luminous glow. There has been no enhancement, the stone is unheated and untreated, a gem whose color and character are entirely the work of geological processes and careful cutting.

When I compare its hue and tone to sapphires from other famous locations, the contrasts bring the Montana identity into sharper relief. A Ceylon sapphire from Sri Lanka often shows bright, lively saturation, the blues and greens appearing more vivid and open, while a Kashmir sapphire is known for a deep, velvety intensity that seems to glow from within. By contrast this Montana yellowish green sits on the lighter side of the scale, its tone airy and its hue leaning toward yellow green rather than pure green or teal. Australian green sapphires can be darker and more inky, carrying deeper, more forest like tones that feel heavier on the finger. Our Montana piece avoids that weight, offering instead a fresh, meadow like nuance that reads as both delicate and sophisticated when viewed in hand or in a setting.

As a second point of comparison I like to think about gemstones from Madagascar, Sri Lanka, and Burma where color profiles vary widely and often define regional character. Madagascar has produced vivid and bright sapphires across a range of hues, sometimes matching Sri Lanka for clarity and punch, and sometimes offering exotic, saturated tones that demand attention. Burmese sapphires and rubies famously display dense, saturated color, a richness that is alluring in a different way than the light, airy presence of this Montana stone. The yellowish green hue of this asscher cut sapphire is less about drama and more about personality, a subtle invitation to pair it with warm yellow metals or with cool whites to coax different notes from its palette. The light color intensity means it will read differently in sunlight than under indoor lighting, it will pick up golden warmth in afternoon sun and take on a cooler, more silvery green in diffused light, a chameleon like quality that feels intentional and refined rather than accidental.

This gem is more than its measurements, it is a conversation starter, a bridge between landscape and jewelry that invites a wearer to consider place and process. The asscher octagon cut emphasizes the stone geometry, creating halls of light and depth that are ideal for a center stone in an engagement ring or a striking pendant. Because it is unheated and very slightly included, the stone will appeal to collectors and connoisseurs who value natural character and traceable origin. At The Natural Sapphire Company we provide the background story and the gemological details together, so you can feel confident about not only how the sapphire looks, but where it came from and how it arrived intact in your hands. If you are seeking a sapphire that carries the fresh, open tone of Montana, that reads as refined rather than overtly decorative, this 1.58 carat yellowish green asscher offers a rare balance of light, clarity, and provenance that is both wearable and meaningful.