1.06 Ct. Color Change Sapphire from Tanzania

This 1.06 carat color change sapphire presents as an oval shape with precise dimensions of 6.65 x 5.17 x 3.36 mm, yielding an overall depth that measures approximately fifty seven percent of the average girdle diameter, a proportion that supports both strong color saturation and effective light return. The gem is faceted in a mixed brilliant style, with a brilliant facet geometry on the pavilion married to a modified crown that preserves broad flashes while concentrating color zones, a strategy that maximizes the stone influence in both cool and warm light sources. Transparency is excellent, and the clarity grade is very very slightly included when evaluated at eye level, indicating that inclusions are minimal and do not interrupt the color change phenomenon. Color intensity is described as intense, and the polish is excellent, producing crisp facet junctions and sharp windowing in the crown facets. Enhancement is none, the sapphire is untreated and natural, and the documented origin is Tanzania, which is known for producing strong color change material with vanadium rich chemistry that promotes pronounced shifts in hue under different illumination.

From a rarity and market perspective this specimen is exceptional, because color change sapphires above one carat that combine intense color shift, eye level clarity, and no enhancement are uncommon in the trade. Most comparable stones either trade at smaller sizes, exhibit weaker change, or have undergone thermal or diffusion treatment to improve appearance. This sapphire displays a clear and reversible color shift, moving from a cool green in fluorescent or daylight conditions to a saturated violet to purple under incandescent light, a transition that is both distinct and evenly distributed across the table and pavilion facets. The mixed brilliant cut has been executed to balance brilliance with color delivery, making the gem suitable for a variety of settings that prioritize light exposure, such as open bezel or four prong mounts, and it will perform well as a center stone in a bespoke engagement ring or as a collector grade example. The Natural Sapphire Company presents this stone for clients who value geological rarity, technical cutting excellence, and the assurance of an untreated Tanzanian origin.