0.57 Ct. Alexandrite from Brazil

This alexandrite is a technically refined example of the color change gem class, weighing 0.57 carat and fashioned into a round shape with precise dimensions 4.97 by 4.87 by 3.40 millimeters. The cutter employed a mixed brilliant cut, combining a brilliant style crown with a pavilion that emphasizes light return and depth, yielding strong scintillation and well defined facet junctions. The stone displays an excellent polish and careful symmetry, which preserves crisp facet edges and maximizes the optical effect inherent to alexandrite. The polished girdle and consistent facet alignment indicate a cutter who prioritized balance between table size, crown angle, and pavilion depth, resulting in a gem that projects controlled brilliance in daylight and rich tone saturation under warm light.

The most compelling technical attribute is the pronounced alexandrite effect, transitioning from a bluish green in fluorescent or daylight conditions to a reddish purple under incandescent illumination. This vivid color change is categorized as intense in color intensity, indicating strong transmission of the chromium induced absorption bands characteristic of fine alexandrite. The Brazilian origin contributes to the specific hue profile and change dynamics, as Brazilian alexandrites often present clean green fields that shift to purplish red rather than orange based reds seen in some other localities. The absence of enhancement underscores that the color and change are wholly natural, preserving both aesthetic integrity and scientific provenance. For connoisseurs who analyze absorption spectra and color loci, this specimen exhibits a spectral behavior consistent with chromium bearing chrysoberyl, and the intensity of the change confirms a desirable concentration of chromophores without reliance on treatments.

Clarity is graded as slightly included when evaluated at eye level, which in technical terms means small inclusions are present but do not materially interrupt the passage of light or compromise the gem structurally. The inclusions in alexandrite are commonly fine crystals, needles or thin feathers, and in this piece they sit inconspicuously within the pavilion, contributing to character without diminishing apparent transparency. From a setting and durability perspective the stone benefits from the mixed brilliant cut and the measured depth, which at approximately 69 percent depth relative to the average diameter preserves face up color while allowing secure bezel or prong engagement. The excellent polish further enhances luster, reducing surface diffusion and maintaining sharp facet reflections, which is especially important for a color change gem because surface condition directly affects perceived color saturation and the clarity of the change.

Owning this alexandrite through The Natural Gemstone Company is an investment in both beauty and craftsmanship, combining a natural, untreated material with professional cutting and finishing. Alexan drite of this size and with such a vivid color change is comparatively rare, and provenance from Brazil adds a documented geological narrative that collectors and investors value. The combination of intense color change, excellent polish, careful mixed brilliant cutting, and documented lack of enhancement creates a gem that performs exceptionally in wearable jewelry and retains appeal as a collectible asset. Whether mounted as a solitaire for maximum light exposure or set within a protective bezel that emphasizes the color shift, this alexandrite is engineered to deliver visual drama and long term value, and it is presented by The Natural Gemstone Company with the attention to specification and disclosure that knowledgeable buyers demand.