1.66 Ct. Alexandrite from Brazil

One beautiful transparent 1.66 carat oval shape alexandrite is presented by The Natural Gemstone Company, with precise dimensions of 9.42 x 6.63 x 3.63 mm, a mixed brilliant cut, and a clarity grade of very slightly included evaluated at eye level. This gem exhibits a dramatic color change from a clear green in daylight and fluorescent conditions to a rich purplish red under incandescent light, a hallmark of fine alexandrite that commands attention and admiration. The stone shows vivid color intensity and an excellent polish, which together maximize its sparkle and depth of color through each facet. There is no enhancement, and the natural transparency and clean appearance at eye level make this a rare and desirable example for collectors who value untreated gems and optical performance that is obvious without magnification.

From a gemological perspective this alexandrite is a variety of chrysoberyl, noted for its exceptional hardness of 8.5 on the Mohs scale, which gives it durability suitable for everyday wear in rings as well as in pendants and other settings that may be exposed to daily use. The color change effect is produced by trace elements in the crystal lattice responding to different spectral compositions of light, and the vivid shift seen in this stone speaks to a favorable combination of color and chromium content. The mixed brilliant cut was chosen to balance color saturation and light return, enhancing the stone in both green and purplish red states. The very slightly included clarity grade indicates minimal internal features that do not detract from the gem at normal viewing distances, while the excellent polish contributes to clean facet reflections and a pleasing face up presentation.

Ethical sourcing is central to the provenance of this alexandrite, which originates in Brazil. At The Natural Gemstone Company we prioritize traceability, responsible procurement, and transparency throughout the supply chain, procuring material from sellers and mines that operate under fair labor practices and with attention to environmental stewardship. This stone has not been treated or enhanced, and our sourcing process includes documentation of origin and where available third party verification of mining practices, so buyers who care about social and environmental impact can acquire a gemstone that aligns with their values. Supporting responsible mining and fair trade practices helps sustain local communities and reduce the environmental footprint associated with gemstone production, and this alexandrite was selected with those considerations in mind.

For the educated buyer and the conscious collector this alexandrite offers a blend of scientific interest, aesthetic rarity, and ethical assurance that elevates it beyond a simple decorative object. Its 1.66 carat weight combined with vivid color change and eye clean clarity places it in a category that is both wearable and collectible, suitable for an heirloom ring or a bespoke pendant where its color change can be appreciated in multiple lighting environments. Consider settings that protect the girdle and pavilion, such as a bezel or a secure prong design in platinum or 18 karat gold, to preserve the integrity of the cut and to complement its color range. Regular care involves gentle cleaning with mild soap and warm water and avoiding prolonged exposure to harsh chemicals. Owning this alexandrite from The Natural Gemstone Company allows a buyer to invest in a gemstone that is scientifically interesting, visually remarkable, and ethically sourced, making it a meaningful addition to a thoughtful and conscientious collection.