0.22 Ct. Alexandrite from Ceylon (Sri Lanka)

This offering from The Natural Gemstone Company is a single, transparent 0.22 carat alexandrite, cut in a precise emerald cut shape with faceted step cutting, measuring 4.47 x 2.34 x 2.09 mm. The gem displays a classic alexandrite color change, presenting a greenish tone under fluorescent lighting and a warm orangish tone under incandescent lighting, with a medium color intensity that is vibrant without being overstated. Clarity has been assessed at very very slightly included, evaluated at eye level, which means the stone appears clean to the unaided eye while retaining natural internal character under magnification. The polish is excellent, and there has been no enhancement, confirming that the color and clarity are entirely natural. The origin is Ceylon, Sri Lanka, a well respected source for high quality chrysoberyl minerals, which adds provenance value for the informed buyer.

Structurally, alexandrite is a chromium bearing variety of chrysoberyl, and its crystallographic density and refractive properties are central to the gem that you see. The tight atomic lattice gives alexandrite a relatively high refractive index and measurable dispersion, which together produce bright, lively reflection and separation of light. Chromium ions act as the chromophore, absorbing selective wavelengths and producing the characteristic shift from green to orange under different light spectra. The emerald cut in this example is particularly well chosen to showcase those effects, because the elongated step facets create broad planes for mirror like reflection, producing controlled flashes of color and a clear hall of light that emphasizes the color change rather than scattering it. Excellent polishing and precise facet junctions minimize light leakage and maximize return, so the stone exhibits a sparkle and color play that is finely tuned and distinct from more common gem species. For collectors and connoisseurs seeking a natural alexandrite with documented origin, natural state, and exceptional cutting quality, this gem represents a compact but powerful example of why alexandrite remains prized, and The Natural Gemstone Company stands behind its description and provenance.