0.90 Ct. Alexandrite from Brazil

This 0.90 carat oval alexandrite presents a precise combination of gemological attributes, and it is offered by The Natural Gemstone Company. The stone measures 6.74 by 5.24 by 3.57 mm, and it is fashioned in a mixed brilliant cut that balances scintillation with face up color. The material is transparent, with vivid color intensity that shifts from a greenish field to a purplish tone as lighting changes. The clarity grade is very slightly included, evaluated at eye level. The polish is excellent, and there has been no enhancement to the material. The documented origin is Brazil, a source known for producing alexandrite with a distinctive internal character that complements its strong color change.

Under magnification the inclusions in this alexandrite reveal a complex and diagnostic internal pattern, which gives the gem an unmistakable signature. Minute mineral crystals are distributed as tiny, angular points throughout the pavilion and crown, and these act as discreet signposts of natural crystallization. Thin, reflective platelets are present in small groupings, catching light as minute flashes that add to the stone s lively appearance without disrupting transparency. Fine, slender needles appear in limited, well defined orientations, and subtle growth zoning runs parallel to the crystal faces, producing faint banding that can be seen as delicate, ghost like phantoms under magnification. Two phase fluid inclusions appear as pinpoint drops with gas bubbles in isolated areas, contributing to the internal landscape that is consistent with a gem formed in a hydrothermal or pegmatitic environment, as is commonly encountered in Brazilian deposits.

These internal features do more than mark origin, they interact with light and color in ways that shape the gem s personality. The reflective platelets and tiny crystals scatter light on a microscopic scale, producing localized scintillation that complements the mixed brilliant facet arrangement. The fine needles and growth zoning influence how the stone transmits and absorbs specific wavelengths, which can subtly modulate the green to purple color change as view angles and illumination conditions vary. Because the clarity grade is very slightly included at eye level, the inclusions remain largely undetectable without magnification, preserving a clean face up appearance. At the same time these inclusions provide a unique fingerprint for the stone, a natural pattern that cannot be replicated by synthetic growth or simple glass filling, and that confirms the gem s geological history.

The cutting and finishing work has been executed to respect both optical performance and the stone s internal character. The mixed brilliant cut accentuates the pavilion s return of light while maintaining broad, saturated color across the table, and the excellent polish ensures surfaces are free of polish lines or abrasion that could otherwise interfere with brilliance. The oval outline measures 6.74 by 5.24 mm, and the well balanced depth of 3.57 mm contributes to an overall face up presentation that emphasizes vivid color intensity. With no enhancements applied, the gem reflects its natural chemistry, where chromium and trace elements produce the classic alexandrite color change. The way the facets harmonize with the inclusion pattern allows each viewing condition to reveal different aspects of the stone, from deep, cool green in daylight to warm, velvety purplish tones under incandescent light.

For collectors, gemological professionals, and connoisseurs who value natural character, the inclusion signature of this Brazilian alexandrite is a compelling attribute. It conveys provenance and natural formation, while remaining consistent with a gem that is very slightly included at eye level and excellent in cut and polish. The Natural Gemstone Company documents the stone as transparent, vivid in color intensity, and untreated, and the microscopic features it displays are part of what makes this alexandrite distinct. Additional gemological reporting and imagery can be provided on request to support evaluation and authentication, and the stone s internal fingerprint is best appreciated through direct inspection with magnification and controlled lighting, which reveals the subtle interplay between mineral inclusions, growth structure, and the stone s renowned color change.