2.02 Ct. Alexandrite from Brazil

This exceptional 2.02 carat oval alexandrite is presented by The Natural Gemstone Company, it measures 10.09 x 7.01 x 3.66 mm, it is fashioned in a mixed brilliant cut, and it displays a green to purplish red color change that is at the heart of its rarity. The mixed brilliant cut has been selected to balance maximum light return with optimal color saturation, the crown facet arrangement enhances scintillation while the pavilion faceting preserves the depth of the color change. Clarity has been evaluated at eye level as very slightly included, which means that under normal viewing conditions the stone presents as essentially clean to the unaided eye with only minor inclusions visible to a trained viewer under close inspection. The gem shows vivid color intensity, an excellent polish, and no enhancements, and the documented origin is Brazil, a source known for producing alexandrite specimens with lively color change and good transparency.

From a gemological perspective this alexandrite stands apart from more common gemstones for several reasons, first because of its color change phenomenon, and second because of the combination of refractive properties and cutting style. Alexandrite belongs to the chrysoberyl family and it exhibits a refractive index in the neighborhood of 1.746 to 1.755, this high refractive index contributes to strong brightness and crisp facet contrast. By comparison conventional sapphire has a similar refractive index around 1.76, while emerald has a lower refractive index near 1.57, and diamond has a much higher refractive index around 2.42. Dispersion, which creates spectral fire, is higher in diamond at approximately 0.044 and lower in chrysoberyl at approximately 0.014, therefore alexandrite will not show the same rainbow flashes as a well cut diamond, but it makes up for that with intense body color, crisp brilliance, and dramatic color play under different light sources. The mixed brilliant cut used on this oval specifically optimizes the balance between brilliance and color, so under daylight the gem projects a lively green and in incandescent or warm light it displays a rich purplish red, this dichotomy is more eye catching than the single hue presentation of many sapphires and emeralds, and it creates an experience that is both dynamic and collectible.

For an educated buyer the value proposition of this alexandrite is clear, first it is a genuine color changing natural alexandrite with no enhancement, second it is above two carats with vivid color intensity and good clarity when evaluated at eye level, and third its Brazilian provenance adds provenance interest without the premiums that apply to historically famous sources while still delivering fine material. Very slightly included clarity at eye level suggests that the stone will present as clean in most jewelry settings, inclusions will not interfere with optical effects, and the excellent polish ensures maximum light return from the facet pattern. When assessing brilliance in practical terms consider that the gem’s high refractive index and the mixed brilliant cutting style provide strong face up brightness and lively facet scintillation, which is perceived differently than diamond fire but in many cases more engaging for collectors because the stone appears alive with shifting color and internal flash. For comparison a similarly sized green sapphire or emerald will typically show a stable color with less interplay between light sources, and a diamond of comparable size will show more dispersion but not a color change, therefore this alexandrite offers a rare combination of visual excitement and wearable elegance.

When considering purchase or bespoke setting options it is useful to view the stone under multiple lighting conditions to appreciate its full range, daylight or balanced white light to evaluate the green presentation, and warm incandescent light to observe the purplish red response. The dimensions of 10.09 x 7.01 x 3.66 mm offer an attractive spread for an oval that sits well in rings or pendants, and the mixed brilliant cut ensures stability of color across the face of the gem while maximizing brilliance. As a natural, untreated alexandrite from Brazil with excellent polish and vivid color intensity this gem represents a meaningful addition to a connoisseur collection or a high end jewelry commission, and The Natural Gemstone Company stands ready to provide additional certification details, high resolution imagery, and guidance on mounting to preserve the stone’s optical behavior and long term value.