0.64 Ct. Yellowish Green Sapphire from Montana

This is a beautifully balanced, transparent 0.64 carat oval shape yellowish green sapphire from The Natural Sapphire Company, presented with precise dimensions of 5.39 x 4.44 x 3.46 mm and a mixed brilliant cut that maximizes return of light. The 0.64 carat weight is an important hallmark of its premium quality, representing a size that is substantial enough to command presence in a fine jewelry setting while retaining the depth of color and internal integrity that discriminating buyers seek. In sapphires, carat weight correlates directly with rarity, and in this weight class, the combination of intense color, clarity and excellent polish is uncommon. The oval outline offers a classical silhouette that lengthens the finger when set in rings, and the exact millimeter proportions indicate careful cutting to balance brilliance and color dispersion, allowing an educated buyer to appreciate how the cutter prioritized optical performance over simple yield from the rough.

Color is the dominant factor in a sapphire valuation, and this Montana yellowish green sapphire displays an intense color intensity that reads vivid yet nuanced, with a yellow green tone that is simultaneously warm and fresh. Montana sapphires are known for their unique and often subtle palette, and this stone typifies that regional character while showing enough saturation to register as a strong, desirable color for collectors and design forward buyers alike. The mixed brilliant cut enhances scintillation and fire, producing faceted flashes that alternately emphasize green and yellow components as the stone moves under light, a property that creates visual interest and versatility in various lighting environments. Transparency is excellent, and the face up appearance is lively, attributes that are amplified by the excellent polish which gives crisp facet junctions and a smooth table surface, yielding superior light performance and an immediate sense of quality when inspected at eye level.

Clarity is graded here as very very slightly included, evaluated at eye level, which for practical purposes means that inclusions are minimal and do not detract from the gem at normal viewing distances. This clarity class indicates that the stone is exceptionally clean to the naked eye, a key consideration for buyers who prioritize both brilliance and long term investment quality. Inclusions that are present are typically internal features that do not compromise structural integrity or durability, and they serve as natural fingerprinting that confirms the stone is natural rather than synthetic. The sapphire has undergone heat treatment, a standard and widely accepted enhancement in the sapphire market that stabilizes color and can improve clarity. Heat treatment applied to Montana sapphires is a permanent and stable process when properly executed, it does not require special ongoing care, and it is disclosed here in full so buyers understand the origin of the stone s appearance. For collectors and those purchasing for bespoke jewelry, this transparency about enhancement, combined with the stone s natural origin and gemological characteristics, reinforces trust and allows for informed decisions.

From the perspective of an educated buyer, this 0.64 carat Montana sapphire represents a thoughtful convergence of size, color, clarity, and craftsmanship that defines premium quality. The carat weight positions it as a versatile centerpiece for engagement rings, elegant pendants, or accent stones in custom couture pieces, offering both visual impact and relative rarity in this particular hue and intensity. The oval shape and mixed brilliant cut provide design flexibility, enabling settings that either emphasize the stone as the focal point or integrate it into more complex multi stone arrangements. At The Natural Sapphire Company we stand behind the provenance and quality of this gem, and we can facilitate independent gemological reporting on request for assurance and resale confidence. In terms of care, standard practices for sapphires apply, avoid harsh chemicals and extreme thermal shock, clean with warm soapy water and a soft brush when necessary, and routine professional inspection if set in a frequently worn piece. If you would like additional images, viewing angles, or advice on mounting options that preserve and showcase the stone s color and brilliance, our team is available to assist you with technical guidance and custom design recommendations.