3.52 Ct. Alexandrite from Tanzania

At The Natural Gemstone Company we present a rare and beautifully transparent alexandrite, Other certified, weighing 3.52 carats, with an oval outline measuring 10.99 by 7.01 by 5.26 millimeters, a vivid color change from yellowish green to reddish, and a mixed brilliant cut finished to an excellent polish, no enhancement. This specimen displays a classic alexandrite color change that is immediately apparent to both collectors and connoisseurs, shifting from a yellowish green in daylight and cool lighting to a rich reddish hue under incandescent or warm lighting. The transparency of the material permits light to pass through the pavilion facets and interact with the body color, so the phenomenon is not just surface deep, but occurs throughout the gem. The dimensions place this stone in a highly desirable size category for both statement rings and museum quality jewelry, and the weight of 3.52 carats combined with the intense color intensity makes this an investment grade candidate for clients who value both beauty and scarcity. The provenance is Tanzania, and the gem is offered with certification that documents the observed color change, clarity grade, cut style, and the presence of natural trace chromophores that create alexandrite character.

The geometric faceting of this oval alexandrite is engineered to maximize light play, with a mixed brilliant cut that blends a faceted crown designed for scintillation, and a pavilion facet arrangement optimized for color saturation and return. Mixed brilliant cutting marries the best attributes of brilliant facet patterns with traditional step and mixed facet arrangements, producing both lively sparkle and deep, even color fields, the combination that makes alexandrite so compelling. The cutting and facet geometry in this example take advantage of the gem proportions, with a depth of 5.26 millimeters which yields a depth to average diameter ratio of approximately fifty eight percent, a ratio that helps balance brightness and color saturation in an oval outline. The excellent polish enhances facet contrast, so each geometric surface functions as an efficient plane for reflection and refraction, aiding the eye in perceiving both the greenish and orangish aspects of the stone as light conditions change. The result is a dynamic interplay of scintillation and color shift that reveals new optical behavior as the piece moves, an attribute that is particularly appealing to those who appreciate gemstones as objects that interact with light and environment.

Clarity is graded as slightly included when evaluated at eye level, a realistic and transparent assessment that informs both aesthetic expectations and value. Slightly included means that small inclusions are present, but they do not seriously interrupt the path of light through the stone, nor do they significantly detract from the overall visual impact or durability. In alexandrite, typical inclusions may include thin needles, pinpoint crystals, or minute fractures, all of which can be part of the stone record that verifies natural origin, furthermore, because this stone has no enhancement, the inclusions are natural features rather than indications of treatment. The intense color intensity reported for this piece is a major contributor to its desirability the richer the saturation in both the greenish and orangish states, the more dramatic the perceived change, and the more arresting the gem will appear when mounted. For educated buyers, the combination of certified color change, natural origin, no enhancement, a mixed brilliant faceting scheme, and an excellent polish represents a transparent and sound basis for valuation and acquisition.

From a gemological and market perspective this alexandrite from Tanzania represents both aesthetic pleasure and collectible significance, with chromium driven color change that remains the hallmark of classical alexandrite. Chromium is the primary chromophore responsible for the shift from green to red and when present at the right concentration it creates strong dichroic behavior under different lighting spectra, a phenomenon collectors prize. Compared to material from other classic localities, Tanzanian alexandrite can offer distinct color profiles and crystal habits, and it is gaining recognition in the market for producing specimens with lively change and good clarity. For use in fine jewelry I recommend settings that protect the girdle and provide balanced light exposure so the color change remains visible in daily wear, settings such as four or six prong baskets or low profile bezels with secure prongs will showcase the stone while offering protection. At 3.52 carats this alexandrite is substantial enough to serve as a solitaire centerpiece or as the focal stone in a high end creation, while its certified status and lack of enhancement simplify both due diligence and future appraisals. If you are seeking a historically significant gem with demonstrable color change, exacting cut work that maximizes optical performance, and a transparent reportable pedigree, this Tanzanian alexandrite offered by The Natural Gemstone Company is an exemplary choice.