0.82 Ct. Alexandrite from Ceylon (Sri Lanka)

This 0.82 carat fancy shape alexandrite from Ceylon presented by The Natural Gemstone Company is a technically refined example of natural color change material, with dimensions of 7.43 millimeters by 4.36 millimeters by 3.46 millimeters, and a mixed brilliant faceting scheme. The cutter has balanced a generous crown table with a proportionate pavilion, yielding a depth that is approximately 59 percent of the average diameter, a proportion that optimizes return of light while preserving the medium color intensity. Clarity is graded as eye clean at standard viewing distance, which allows the faceting to produce crisp internal reflections and well defined facet junctions. Polish is excellent, so surface scattering is minimized and facet brilliance is maintained, and the stone is unenhanced, certifying that color and transparency are entirely natural. The mixed brilliant layout combines a faceted crown with step influenced pavilion facets, producing concentrated flash and a stable face up brightness that complements the alexandrite effect.

In comparison to other gemstones in its category, this Sri Lankan alexandrite demonstrates the characteristic high refractive response of chrysoberyl, with an adamantine to vitreous luster that renders sharp, mirror like facet reflections. Alexandrite has a refractive index range that closely approaches corundum, but it displays lower dispersion, therefore this stone presents brilliance through contrast and intense facet return rather than through overt fire. Against darker, strongly saturated alexandrites from historical Russian sources, this Ceylon specimen is lighter in tone and trades extreme color contrast for superior scintillation and visibility of its color change, which shifts from greenish under fluorescent lighting to orangish under incandescent lighting. Compared to synthetic alexandrite and color change sapphires, the natural Ceylon material often shows more subtle pleochroic behavior and complex micro zoning that interacts with the mixed brilliant cut to create dynamic internal reflections. For buyers who prioritize technical cut quality, natural origin, and a lively reflective performance balanced with a clear, unenhanced color change, this alexandrite is an excellent choice.