1.77 Ct. Bluish Green Sapphire from Tanzania

This cushion shape bluish green sapphire from Tanzania is a 1.77 carat, transparent gem, with dimensions of 7.84 x 6.35 x 3.78 mm, presented with a mixed brilliant cut and an excellent polish. The stone is described as Other certified, and it carries a clarity grade of eye clean at eye level, with a vivid color intensity and no enhancement. These technical attributes are offered by The Natural Sapphire Company as part of the documented profile for this piece. The combination of size, shape, and optical quality makes this sapphire a coherent example of natural, untreated material, and the recorded measurements provide a precise basis for setting, valuation, and comparison with other sapphires in a professional context.

The mixed brilliant faceting applied to the cushion outline is intended to balance surface scintillation and internal light return, a characteristic that can be optimized in gems that are notably transparent. The cushion silhouette provides a broad crown to display color, while the mixed brilliant arrangement of pavilion and crown facets enhances the perception of depth and fire. With a clarity grade of eye clean, the sapphire shows no inclusions visible to unaided vision at typical viewing distances, which preserves both visual uniformity and structural integrity for mounting. The excellent polish contributes to crisp facet junctions and efficient reflection, allowing the vivid bluish green hue to be presented with clarity and saturation. The vivid color intensity signals strong saturation and a lively tonal balance, attributes that are particularly desirable in bluish green sapphires, where both the blue and the green components must be in equilibrium to produce the most attractive appearance.

The origin of this sapphire in Tanzania is a salient aspect of its value profile, and it is relevant on geological, aesthetic, and market levels. Tanzanian sapphire sources, including known districts in the southern and central provinces, are associated with pegmatitic and metamorphic host environments that yield stones with distinctive chromophore chemistry, often including iron, titanium, and chromium in varying proportions. That local geology can create a spectrum of blues, greens, and bluish green hues that are recognized by connoisseurs and gemologists for their unique tone and saturation. Provenance from Tanzania therefore contributes to the gem s narrative, supporting assessments of rarity and character that factor into desirability. From a market perspective, documented origin can affect demand and price, because collectors and designers value traceability as part of the gem s overall story. In this instance, the absence of any enhancement additionally increases the importance of provenance, since the untreated state confirms that the color and clarity are intrinsic qualities produced by natural geological processes. Certification designated as Other certified provides an independent record of these attributes, reinforcing confidence in both origin and treatment status.

For practical considerations related to use, care, and longevity, the 1.77 carat weight and the 7.84 x 6.35 x 3.78 mm proportions place this sapphire in a size range suitable for a variety of jewelry types, most commonly as a solitaire ring center, a focal pendant, or a substantial component in a bespoke cuff or brooch. The mixed brilliant cut and eye clean clarity allow for direct settings where the stone s optical performance will be a primary design element, and the excellent polish supports longevity in surface brilliance with appropriate care. Routine maintenance involves standard precautions for corundum group gems, such as avoiding harsh mechanical impacts and extreme temperature shocks, and professional cleaning and inspection at intervals recommended for fine settings. In terms of valuation, the combination of natural, untreated color, transparent body, vivid intensity, and documented Tanzanian origin positions this sapphire confidently within the upper tier of comparable gems, where provenance and absence of enhancement contribute appreciably to market perception. The Natural Sapphire Company provides full documentation and can assist with technical details for setting, appraisal, and long term care, enabling informed decisions based on clear, factual information about this sapphire s characteristics.