0.65 Ct. Alexandrite from Brazil

This GIA certified alexandrite offered by The Natural Gemstone Company is a transparent, color changing gemstone weighing 0.65 carat, measuring 6.33 by 4.61 by 2.97 millimeters, and fashioned into an elegant oval shape with a mixed brilliant cut. The gem exhibits a striking green blue to purple shift, with intense color intensity and an excellent polish that maximizes light return. Clarity is graded as very slightly included, evaluated at eye level, which means minor inclusions are present but do not detract from the gem when set. There has been no enhancement to this stone, and its Brazilian origin contributes to a characteristic palette that often favors cooler green blue tones in daylight and richer purplish red tones in incandescent lighting. The accompanying GIA report provides independent verification of these attributes, supporting the gem as a natural, untreated example of fine alexandrite quality.

In terms of reflective behavior, this alexandrite demonstrates lively facet reflections and good brilliance owing to the mixed brilliant cut and the excellent polish, producing crisp internal reflections that emphasize the color change phenomenon. Compared to other alexandrites, especially those from classic localities, Brazilian stones often show a vivid and dramatic color shift, and this specimen is notable for its strong dichroism and color change under different lighting. Against other gemstones in the same category, such as sapphire or spinel, alexandrite has lower dispersion than diamond, so it does not exhibit the same fire, but its appeal lies in the dynamic color shift rather than spectral dispersion. Versus other color change gems, like certain garnets that may change between orange and red, alexandrite offers a more sophisticated and subtle transition between green blue and purplish red, with cleaner, more gemlike reflections when well cut. For an educated buyer seeking a collector grade stone, this piece combines a reputable laboratory certificate, a natural Brazilian origin, no enhancements, and a cut that balances brilliance with color change, making it a valuable acquisition for both jewelry and investment purposes.