0.71 Ct. Alexandrite from Ceylon (Sri Lanka)

This transparent 0.71 carat round alexandrite from Ceylon Sri Lanka presents precise dimensions of 5.33 by 5.25 by 3.67 mm, executed in a mixed brilliant cut that balances optical performance with color saturation. The mixed brilliant design pairs a well proportioned brilliant crown with a carefully controlled pavilion geometry, producing strong light return, crisp facet junctions, and controlled scintillation, all attributes that contribute to the gem appearing lively and evenly faceted at face up view. Clarity is graded slightly included at eye level, indicating the presence of minor internal features that do not materially interrupt the play of light or compromise structural integrity. The polish is excellent, showing mirror like facet surfaces and clean facet edges, which enhances both brilliance and the clarity of the color change. There has been no enhancement to this stone, which is important for collectors and connoisseurs who prioritize untreated material. The combination of weight, precise cutting, and the excellent polish positions this gem as a technically refined example of gemological craftsmanship from The Natural Gemstone Company.

The defining characteristic of this alexandrite is its color change, registered as bluish green to pinkish purple across standard lighting conditions, with a medium intense color intensity. The phenomenon arises from chromium trace elements in the chrysoberyl crystal structure, coupled with the stone's selective absorption bands that favor green transmission in higher correlated color temperature light, and red transmission under warmer incandescent light. In daylight or cool fluorescent conditions the face up appearance leans toward a clear bluish green with balanced saturation, while under warm incandescent or candle light the color shifts toward a pinkish purple, demonstrating a classic alexandrite effect. The mixed brilliant faceting strategy here is chosen to enhance this optical behavior, by optimizing crown and pavilion angles to emphasize the dichroic response, and by providing a contrast of small crown facets that produce lively scintillation against broader pavilion reflections that deepen perceived color. The medium intensity grade means that the color is strong enough to be distinct and collectible, while retaining nuance and depth rather than a flat saturated tone, a quality that experienced buyers and gem cutters both value.

When compared to historically celebrated gemstones, this piece evokes the legacy of 19th century Russian alexandrite specimens that captivated European courts, and the jeweled artistry of Fabergé that showcased alexandrite to tsars and collectors. Alexandrite named after Alexander II carries an aristocratic provenance in gem history, prized for its rare color changing property and its association with scarcity of gem quality material. While gems such as the Hope Diamond are renowned for their exceptional size and storied provenance, collectors distinguish alexandrite by the rarity of clean, color changing crystals at even modest sizes. In that context this 0.71 carat Ceylon stone offers a concentration of properties that emulate historical desirability, namely a distinct color change, excellent polish, and natural origin without enhancement. Sri Lankan alexandrite historically produces a characteristic mix of bluish green and pink tones, and this example manifests those regional tendencies while presenting a clarity and cut quality that approaches the standards set by the finest historical pieces. For enthusiasts who measure value by optical intrigue and natural integrity, this stone delivers a compact, wearable example of a phenomenon that historically commanded attention in royal collections.

From a practical and curatorial perspective this alexandrite is suitable for high quality mounting in rings, pendants, and earrings, where the mixed brilliant cut will provide a lively face up display and responsive color change in varied illumination environments. Chrysoberyl alexandrite's hardness and toughness make it robust for daily wear, however standard care is recommended, namely avoiding prolonged exposure to strong heat sources and aggressive chemicals, and cleaning with warm soapy water and a soft brush or a professional ultrasonic bath when the setting and clarity are appropriate. The absence of enhancement increases the stone's appeal for investment grade use and for certification, and an independent gemological report will further document the stone's measured attributes and confirm origin provenance when requested. At The Natural Gemstone Company we emphasize technical transparency, and we can provide detailed imaging, viewing notes under specified lighting conditions, and advice on setting geometry to maximize the stone's color change and stability. This alexandrite combines meticulous cutting, natural color change chemistry, and unenhanced origin, creating a gem that is both a technical showcase and a historically resonant collectible for discerning buyers.