0.17 Ct. Alexandrite from Tanzania

This 0.17 carat oval alexandrite measures 3.57 x 3.39 x 2.24 mm, and exhibits a precise mixed brilliant cut that balances scintillation and color saturation, with a brilliant style crown to maximize light return and a pavilion geometry tailored to preserve the distinct alexandrite color change from greenish to pinkish. The faceting demonstrates careful attention to proportion and symmetry, a slightly modest table relative to the face up dimensions to avoid wash out, and crisp facet junctions that contribute to an excellent polish across all planes. Clarity is graded as very slightly included when evaluated at eye level, meaning the stone contains minor internal features that do not detract from transparency or brilliance, and which in fact can act as subtle light scattering centers that enhance the perception of color change. Color intensity is cataloged as intense, and the stone displays a clean and decisive color transition under different light sources, evidence of a strong chromium driven chromophore without artificial alteration, enhancement is absent, and the stone is presented untreated and natural.

The Tanzanian origin of this alexandrite materially enhances its desirability and market value, because Tanzanian sources are recognized for producing stones with vibrant chromatic shifts and a trace element profile that yields saturated green in daylight and robust pink to purplish red in incandescent light. Provenance from Tanzania implies limited supply and distinct geological formation conditions that often produce fine crystallographic clarity and pronounced dichroism, attributes prized by connoisseurs and collectors. From a technical perspective the combination of small but well proportioned size, mixed brilliant faceting, very slightly included clarity, intense color intensity, and excellent polish culminates in a gem that performs beyond its carat weight in face up presence and optical complexity. The Natural Gemstone Company offers this alexandrite as a specimen of both gemological integrity and artisanal cutting, and our documentation affirms natural origin and absence of treatment, providing assurance to buyers seeking an investment quality untreated alexandrite with authentic Tanzanian provenance.