1.16 Ct. Bluish Green Sapphire from Tanzania

This transparent bluish green sapphire weighs 1.16 carat, and measures 6.05 x 6.07 x 4.06 mm, offered by The Natural Sapphire Company. It is fashioned in a round shape with a mixed brilliant cut, a choice that combines a brilliant crown with a pavilion that enhances both scintillation and color saturation. The clarity is graded slightly included at eye level, which for colored gemstones indicates minor inclusions that do not materially detract from face up appearance or durability for everyday wear. The color intensity is described as intense, producing a rich bluish green that shows strong saturation under typical lighting. The polish is excellent, which improves light return from each facet and contributes to a lively visual performance. The sapphire has been heat treated, a stable and commonly accepted enhancement in the trade, disclosed here for full transparency. The stone originates from Tanzania, a recognized source of fine corundum that frequently yields attractive hues and good crystal quality, and provenance from this region adds to the gemological interest and desirability for collectors and connoisseurs.

When compared to other gemstones in its category, this sapphire demonstrates distinct reflective qualities that set it apart. Corundum has a relatively high refractive index in its class, which produces more brilliance and stronger facet contrast than many green or bluish green alternatives such as tourmaline or aquamarine, both of which have lower refractive indices and therefore a softer, less sparkly appearance. Compared with spinel, which can show attractive brilliance, sapphire tends to display deeper color and more persistent light return because of its higher refractive index. Emeralds, while cherished for their green, are typically more included and show less lively reflection due to internal features and lower refractive index. The mixed brilliant cut of this sapphire is particularly effective at balancing fiery scintillation with the preservation of intense color, whereas step cuts emphasize color at the expense of sparkle. For the educated buyer, this stone represents a sound choice, combining a collector appealing origin, intense and well saturated color, a practical clarity grade that maintains appearance and value, stable and disclosed heat treatment, excellent polish, and the inherent durability of corundum, which rates 9 on the Mohs scale, making it suitable for everyday jewelry.