1.54 Ct. Alexandrite from Tanzania

This 1.54 carat radiant shape alexandrite from The Natural Gemstone Company stands out immediately for its combination of weight, clarity, and color change. Measuring 7.85 by 4.82 by 4.43 millimeters, the stone is a true collector quality size for alexandrite, where larger, well-proportioned specimens are uncommon. The radiant cut has been executed to an excellent polish, creating sharp facet junctions that maximize both brilliance and the gem’s color-change effect. With a clarity grade of very slightly included evaluated at eye level, this stone appears remarkably transparent compared with many commercial alexandrites that carry heavier inclusions or surface-reaching features. Unlike heat-treated or otherwise enhanced stones commonly offered on the market, this alexandrite is natural and untreated, which preserves its intrinsic optical properties and historical desirability. Its medium color intensity produces a distinctive green in daylight and a warmer brown under incandescent lighting, a more unusual and sophisticated palette than the straightforward blue-green to red shifts found in many lower quality or synthetic alternatives.

Beyond its physical attributes, the origin of this alexandrite in Tanzania adds meaningful value and distinctiveness. Tanzanian alexandrites, particularly those from the Umba valley and surrounding deposits, are prized for producing unique and sometimes unexpected color transitions, often with olive, brown, and green nuances that differ from the classic Russian or Brazilian examples. This provenance appeals to connoisseurs who value character and geographic story as much as technical quality. Compared to Russian alexandrite, which commands a premium for historical prestige, a well-cut Tanzanian stone like this one offers superior overall value by combining attractive size, eye-level clarity, and an intriguing color-change at a more accessible price point. For jewelry designers and discerning buyers, this gem provides a versatile and modern look that performs beautifully in solitaire rings or custom settings where the radiant cut’s linear facets complement contemporary metalwork. Sourced and presented by The Natural Gemstone Company, this alexandrite represents a rare convergence of transparency, craftsmanship, natural origin, and untreated authenticity, making it an excellent choice for someone seeking a superior, characterful, and investment-worthy color-change gemstone.