1.73 Ct. Alexandrite from Tanzania

We present a transparent 1.73 carat oval alexandrite from Tanzania, with dimensions of 7.50 by 5.44 by 5.36 millimeters, a mixed brilliant cut, a clarity grade of very slightly included evaluated at eye level, intense color intensity, and an excellent polish. This gem is unenhanced, entirely natural, and offered by The Natural Gemstone Company. The oval proportions yield a length to width ratio of approximately 1.38, providing a balanced silhouette that preserves optical weight while allowing the faceting scheme to optimize both color and light performance. The mixed brilliant cut employed here combines a precisely executed brilliant faceted crown with a carefully configured pavilion, producing a controlled interplay of broad flashes and pinpoint scintillation. Excellent polish and well defined facet junctions deliver crisp reflections and minimal light leakage, maintaining visual transparency and a lively surface sheen that complement the stone s strong color change.

The cut has been executed to enhance the alexandrite s inherent light responsive properties, maximizing color change from greenish to orangish through geometry and facet architecture rather than through any enhancement. The moderate table and calibrated crown heights direct incident light into a network of pavilion facets that lengthen the internal light path and increase selective absorption of chromophore wavelengths, intensifying the perceptible color shift under differing light sources. Simultaneously, the mixed brilliant faceting produces high internal reflection and controlled dispersion, so that the gem exhibits both strong brilliance and distinct dichroic behavior characteristic of alexandrite. The oval shape and facet layout create a harmonious contrast pattern, with broad flashes that reveal the saturated body color and smaller scintillating flashes that articulate movement and fire. Very slightly included clarity ensures that inclusions do not disrupt the optical pathways, allowing near complete light return and preserving dynamic contrast between bright and dark facets. The result is a gem that reads as intensely colored and lively in motion, with polish and symmetry that emphasize mirror like surface reflections and clean facet breaks. For collectors and connoisseurs seeking a natural, untreated color change stone with technical refinement, this Tanzanian alexandrite from The Natural Gemstone Company presents a compelling synthesis of material quality and cutting precision.