1.05 Ct. Bluish Green Sapphire from Tanzania

This transparent bluish green sapphire weighs 1.05 carat and is presented in an elegant oval shape, with measured dimensions of 6.91 x 5.82 x 3.02 mm. The gem is fashioned with a mixed brilliant cut, combining faceting styles to optimize face up brilliance and fire while preserving depth for color saturation. Clarity is graded as eye clean, evaluated at eye level, indicating that no inclusions are visible to the naked eye, which contributes to a clean and luminous appearance. Color intensity is classified as intense, producing a strong and vivid bluish green that remains arresting across typical viewing conditions. The polish is excellent, providing crisp facet junctions and smooth facet planes that enhance light return and contribute to overall scintillation. This sapphire originates from Tanzania, and it has not undergone any enhancement, which preserves the natural state of the crystal and confirms that its appearance is the result of natural formation rather than treatment.

The bluish green hue of this sapphire sits in a desirable zone where blue and green components are balanced to produce a cool, verdant tone with noticeable depth. The intense color intensity signals robust chroma, which supports a rich face up color even in the modest 1.05 carat weight, and the transparent quality allows light to penetrate the gem and interact with its internal structure for lively optical performance. Because the stone is eye clean, the color reads uniformly and without disruption from visible inclusions, enhancing perceived purity and allowing the hue to dominate the visual experience. While sapphires can exhibit pleochroism in some cases, this specimen presents a stable, intense bluish green across common viewing angles, a characteristic that is particularly important for jewelry applications where consistent color is preferred. The no enhancement status further ensures that the color is intrinsic to the material.

The mixed brilliant cut applied to this oval sapphire was selected to balance brilliance and color return. The proportions derived from the reported dimensions yield an overall depth that is well suited to the oval form, the measured pavilion depth of 3.02 mm relative to the girdle diameters produces an approximate depth ratio of approximately 47.5 percent, a proportion that supports both lively brilliance and concentrated color. The oval outline with softened ends and well defined length to width relation enhances perceived size and elegance on the finger or in other settings, while the mixed faceting pattern ensures a combination of small, scintillating light returns from the crown and strong internal reflection from the pavilion. Excellent polish accentuates these effects, enabling crisp light leakage control and minimizing surface disturbances. Taken together, the weight, dimensions, cut style, and finish yield a gemstone that displays immediate visual appeal and well managed optical behavior.

Durability considerations for gemstones are commonly referenced to the Mohs hardness scale, and sapphire ranks at nine on that scale, second only to diamond which is ten. This level of hardness provides substantial resistance to scratching during normal wear and maintenance, significantly outpacing minerals such as quartz which rates seven, and topaz and spinel which rate eight. Hardness is only one component of durability, however, and corundum, the mineral species to which sapphires belong, also benefits from good toughness and an absence of pronounced cleavage, attributes that lessen the risk of cleavage related breakage during day to day use. The combination of a Mohs hardness of nine and favorable toughness characteristics makes this Tanzanian sapphire a suitable choice for frequent wear, including rings and other jewelry that are subject to incidental contact. The fact that the stone is natural and unenhanced adds to long term stability, as no treatments have been applied that might alter behavior under heat or other environmental conditions. The Natural Sapphire Company stands behind the gemological description and provenance provided, and this sapphire exemplifies the balance of beauty and resilience that professional jewelers and knowledgeable buyers seek.