0.90 Ct. Alexandrite from Russia

This listing describes a single, transparent alexandrite, weighing 0.90 carat, presented in an emerald cut shape, with dimensions measuring 6.64 millimeters by 4.28 millimeters by 3.09 millimeters. The stone displays a greenish to purplish color change, consistent with classic alexandrite behavior, and exhibits a light color intensity. Clarity has been evaluated as slightly included at eye level, and the gem carries an excellent polish. There has been no enhancement to this specimen, and its reported origin is Russia, a source historically associated with fine alexandrite specimens. The emerald cut emphasizes the gem s color and internal structure, producing broad, parallel facets that yield controlled flashes of color and a refined visual presence. The overall presentation is one of measured elegance, with the proportions and finish suited to settings that favor clarity of hue and cut definition.

Optically, alexandrite occupies a distinctive position among collector and bridal gemstones, because its most notable attribute is the dramatic change in hue under differing light sources. This effect arises from the stone s chromium content and its specific light absorption characteristics, which produce a pronounced shift from greenish tones in daylight or fluorescent light to purplish tones in incandescent light. In terms of brilliance, alexandrite differs in character from more commonly encountered gems. Compared with diamond, alexandrite shows less of the high velocity scintillation and fire that arise from diamond s very high refractive index, however it offers a more complex chromatic dynamism that diamond cannot provide. Compared with sapphire, which is valued for saturated color and strong luster, alexandrite s refractive response can be similarly lively, yet the viewer experiences a perceptible change in color rather than a single stable hue. Relative to emerald, which often exhibits visible inclusions and a softer luster, this alexandrite tends to deliver clearer transmission and more lively facet contrast due to its higher refractive response, subject to the noted slightly included clarity grade. The emerald cut further modulates brilliance, producing broad flashes of light and a clear display of the color change phenomenon rather than the small pinpoint scintillation associated with brilliant cuts.

From a practical and provenance standpoint, this Russian alexandrite presents several points of interest for consideration in a jewelry commission or a collection. The slightly included clarity grade indicates natural internal features that can serve as identification markers and evidence of natural origin, and these features are visually compatible with an emerald cut that prioritizes color and polish. The absence of enhancement is an important attribute for collectors, and the reported Russian origin aligns with historical desirability for alexandrite from this region. With a mineral hardness suitable for everyday wear when set with care, alexandrite is generally durable, and the emerald cut protects the corners relative to high brilliance cuts, making it appropriate for rings and other frequently worn pieces. For those commissioning a setting, the dimensions provided should guide bezel or prong design to secure the stone while allowing optimal light interaction. At The Natural Gemstone Company we document these characteristics so that gemological and aesthetic qualities are clearly communicated, and we can assist with additional details such as photographic documentation, viewing under standard lighting, and any certification requests.