0.33 Ct. Bluish Green Sapphire from Montana

This elegant Montana sapphire from The Natural Sapphire Company is a transparent 0.33 carat oval, measuring 4.78 by 3.42 by 2.60 millimeters, with a mixed brilliant cut that has been executed to emphasize both scintillation and face up color. The gem shows a bluish green hue with medium color intensity, an excellent polish, and a clarity grade of very very slightly included, evaluated at eye level, which effectively makes it eye clean for most viewers. The sapphire has been heat treated, a stable and widely accepted enhancement that refines color and minimizes the visibility of internal features without compromising the stone that is corundum, hardness nine on the Mohs scale, which makes it an excellent choice for daily wear. The combination of precise proportions and a mixed brilliant pavilion allows this small gem to deliver lively return of light, while the subtle green component gives it a fresh and contemporary personality that still reads as classic sapphire elegance.

When discussing grading and optical behavior with an educated buyer, the clarity designation of very very slightly included, evaluated at eye level, is particularly meaningful, because it signals minimal impact from inclusions to unaided vision, while still being transparent enough to display excellent light performance. The mixed brilliant cut is a deliberate choice for stones of this size, because the brilliant crown facets maximize sparkle above the table, while the modified pavilion facets control light leakage to maintain an even face up appearance, so a 0.33 carat oval like this appears larger and more lively than its weight alone might suggest. The medium color intensity strikes a balanced tone, avoiding the heaviness that can mute brilliance, and it also demonstrates the Montana origin, which is known for a spectrum of teals, sea greens, and bluish greens caused by subtle variations in iron and titanium chemistry during crystal formation. The excellent polish enhances facet clarity and contributes to crisp reflections, and the documented heat treatment is consistent with standard trade practice to reveal the stone at its best while ensuring long term stability under normal wear.

Comparisons to historically famous sapphires help place the unique value of this Montana stone in context, because collectors and connoisseurs often think in terms of hue, clarity, and provenance. The celebrated Kashmir sapphires are renowned for their velvety cornflower blue and strong saturation, and Burmese sapphires are prized for their vivid royal blue, while classic Ceylon stones often show bright cornflower tones with high lightness. By contrast, Montana sapphires have a distinctive palette that includes the bluish green tone of the present gem, and these stones have been valued by collectors since the late nineteenth century for their rare and varied colors. Unlike star sapphires such as the Star of India, which are admired for asterism but often contain significant silk inclusions, this Montana gem is notable for its eye cleanliness and refined cut, so it offers a different kind of rarity, one that is based on the convergence of color nuance, clarity, and cutting skill in a smaller weight. Heat treatment has been used historically to improve appearance in many famous gems, and the disclosure of this treatment by The Natural Sapphire Company aligns with best practice and with the expectations of discerning buyers.

For the educated buyer looking for a sapphire that combines provenance, wearable durability, and aesthetic versatility, this 0.33 carat Montana bluish green oval provides an attractive proposition, because its modest size is offset by an excellent cut and polish, eye clean clarity, and a color that is both distinctive and wearable in a variety of settings. The stone is ideal for a delicate engagement ring, a halo style that amplifies perceived size, or a sophisticated pair of studs where matching and light performance are priorities. From an investment perspective, Montana sapphires with attractive bluish green tones and strong facet work have seen growing appreciation among collectors who value provenance and unique colors, and because The Natural Sapphire Company documents origin and enhancement clearly, buyers can acquire this gem with confidence in full disclosure. If provenance, craftsmanship, and the specific charm of a bluish green Montana color are priorities, this sapphire represents a refined and verifiable example of those qualities.