0.52 Ct. Alexandrite from Russia

This is a fine example of natural Russian alexandrite from The Natural Gemstone Company, a transparent, pear shaped, mixed brilliant cut gem weighing 0.52 carat, with exact dimensions of 6.21 by 4.01 by 3.06 millimeters. The stone displays a greenish to purplish color change, an intense color intensity, and an excellent polish. Clarity has been evaluated at eye level as slightly included, meaning that minor inclusions are present but do not detract from the gem when set, and there has been no heat treatment or other enhancement. The mixed brilliant cut was chosen to balance optimal light return and the preservation of color change, combining a faceting plan that yields strong scintillation while maintaining depth of tone across the pear silhouette. For an educated buyer, these specifics immediately convey proportion, faceting intent, and the uncompromised natural origin that collectors and connoisseurs prioritize.

The formation story of this alexandrite began hundreds of millions of years ago in a dynamic portion of the Earths crust where intense metamorphic forces and fluid activity converged. In Russian deposits, particularly those associated with the Ural region, chrysoberyl crystals formed within contact and regional metamorphic rocks, often in mica schists and amphibolites where beryllium was available. Over vast geological time scales, high pressures and temperatures allowed beryllium bearing minerals to recrystallize in the presence of trace chromium, an element that is essential for the alexandrite color effect. Circulating hydrothermal fluids concentrated beryllium and trace chromium into pockets and veins. As those fluids cooled slowly, atoms arranged into the chrysoberyl crystal lattice. Minute substitutions of chromium into the lattice created the strong dichroic absorption features that cause alexandrite to display greenish tones in daylight and purplish or raspberry tones under incandescent light. The resulting crystal grew in a high energy environment, sometimes developing inclusions and growth features that record the exact conditions of crystallization, and that natural history is preserved in every facet of the polished gem you see today.

From a gemological perspective this alexandrite checks many boxes that matter to an informed purchaser. The intense color intensity is the primary driver of value in alexandrite, and the clear green to purple shift is the signature trait collectors seek. The slightly included clarity grade at eye level indicates that inclusions are present but not dominant, and in this weight and size they often enhance rather than detract from character, as internal features can confirm natural origin under magnification. The mixed brilliant cut is purposeful, with a faceting scheme that maximizes both brilliance and the perceptible color change by controlling how light is absorbed and reflected from different viewing angles. The excellent polish ensures that facet junctions are crisp and surfaces are free from polish pits, which optimizes light performance and increases wearability. Crucially for provenance and long term appreciation, this specimen is unenhanced, meaning it has not been heat treated or otherwise altered, a detail that adds a premium for collectors who prefer untouched natural material.

For the discerning buyer this 0.52 carat Russian alexandrite represents rarity, geological story, and wearable beauty in a single gem. Russian alexandrites are historically significant, originating from classic localities that produced the first and most celebrated examples, and that history frequently translates into desirability on both aesthetic and investment fronts. In practical terms the stone is an excellent candidate for a bespoke pendant or a refined ring setting where the pear shape can be oriented to emphasize the color change and to minimize the visibility of the minor inclusions. As with all fine alexandrite, careful handling is advised, with routine cleaning using warm soapy water and a soft brush, and avoidance of harsh chemicals and ultrasonic cleaning if significant internal features are present. The Natural Gemstone Company can provide additional documentation, including photography under multiple lighting sources and assistance arranging an independent gemological report for buyers who require formal certification. This alexandrite is a piece of deep time rendered into wearable art, a compact but powerful expression of geological processes and gemological quality that will appeal to the educated buyer seeking both provenance and beauty.