1.89 Ct. Cabochon Alexandrite from Tanzania

One of the rarest visual experiences in the gem world is a true color change alexandrite, and this translucent 1.89 carat oval from Tanzania delivers that phenomenon with integrity and presence, a quality that sets it apart from many stones you will encounter on the market. Measured at 7.18 x 6.28 x 4.25 mm, the cabochon cut offers a broad domed surface that showcases the stone as a bold focal point, a presentation that faceted stones of similar weight often cannot match. The yellowish green to brownish orange shift is natural and clear, and because this alexandrite is unenhanced, the color change is authentic rather than engineered. Compared to lab grown alexandrites and heat treated alternatives that aim to mimic the effect, this Tanzanian gem carries the provenance and rarity that collectors and serious designers prize. The translucent body tone and medium color intensity allow light to interact with the material in a way that produces an engaging glow and a warm silk like luster, and the excellent polish ensures that reflections run cleanly across the dome for maximum visual impact.

Beyond the dramatic color change, the stone’s physical characteristics make it supremely suited to a statement piece, a category where size, clarity, and surface quality must work together. At 1.89 carats this alexandrite reads large on the hand, and the oval cabochon shape with its generous table becomes the centerpiece in a ring, a pendant, or a bold brooch. The clarity has been evaluated as very slightly included at eye level, which means the gem is essentially eye clean and superior in clarity to many cabochons that show heavier inclusions or cloudiness. This level of clarity allows the color change to read evenly across the dome, and it also increases the value to both jewelry designers and collectors seeking a clean canvas for creative settings. The excellent polish amplifies the stone’s translucency, producing a soft internal glow that changes under fluorescent and incandescent light, as seen in the photos, and the cabochon style smooths and deepens the color transition, giving the piece a timeless, almost painterly quality that stands above mass market alternatives.

When you compare this piece to other offerings, the combination of authentic, untreated origin, desirable weight, and fresh eye clean appearance explains why it is a superior choice for anyone aiming to create a signature item. Alexandrite is valued for its hardness around 8.5 on the Mohs scale and for the dramatic story it tells with light, but many stones in the marketplace have been treated, synthesized, or cut into smaller, less impactful shapes. This Tanzanian cabochon is natural, not enhanced, and its medium color intensity offers versatility in metal choices and design directions, allowing jewelry makers to pair it with cool white metals for contrast or with warm gold for a richer feel. The Natural Gemstone Company stands behind the accuracy of the measurements and the clarity grading, and we present this stone with professional images that illustrate how it wears on the finger and how it responds to different light sources. For a customer seeking a one of a kind center that reads as a true statement piece, this alexandrite combines rarity, aesthetic versatility, and honest, natural color change in a way that outperforms many comparable options on the market.