DEACRIPTION: This green tourmaline unfolds like a natural cross section of time, where each layer records a distinct moment of its growth. Rather than presenting a uniform colour, the crystal reveals a structured internal landscape, with a darker outer rim enclosing progressively lighter green zones toward the centre, creating a composition that feels both deliberate and entirely geological. Moving inward, the colour transitions into a more vivid emerald green intermediate zone, where light interaction becomes significantly more active. This section displays stronger chromatic saturation and begins to reveal the optical depth of the material. At the core, the crystal opens into a lighter, more translucent green nucleus, occupying a substantial portion of the volume. This central zone exhibits a soft, diffused luminosity, with a slightly misty internal texture that scatters light rather than reflecting it sharply. The effect is reminiscent of light passing through suspended mineral veils, creating a calm but internally active visual field. The lateral faces preserve portions of the original prismatic structure, where subtle longitudinal growth striations remain visible. These natural linear features interact with light directionally, producing elongated reflections that run parallel to the crystal growth axis. Under direct illumination, these surfaces activate strongly, enhancing both brilliance and perceived structure. The overall morphology is compact and slightly irregular, shaped by natural geological forces rather than symmetry. Surface variations, minor fractures and internal inclusions contribute to the authenticity of the specimen, reinforcing its natural origin without compromising its visual coherence. This is a piece where zoning, structure and light behaviour work together, producing a layered visual experience that shifts depending on illumination conditions. SPECIFICATIONS: • Weight: 0.49 g • Weight in carats: 2.45 ct • Dimensions: 10 × 10 × 2.5 mm • Origin: Afghanistan • Mineral species: Tourmaline • Variety: Green Tourmaline • Crystal system: Trigonal • Form: Natural crystal section • Colour: Dark green rim, emerald green intermediate zone, pale green core • Colour distribution: Concentric zoning • Transparency: Translucent with semi transparent core • Lustre: Vitreous • Treatment: None • Condition: Natural, unpolished NOTABLE POINTS: • Clearly defined concentric zoning with three distinct chromatic phases • Darker outer rim creating strong natural contrast and framing effect • Emerald green intermediate zone with enhanced saturation and optical activity • Translucent inner core displaying soft light diffusion and internal glow • Well preserved prismatic side faces with visible longitudinal growth striations • Directional light reflection along crystal growth lines • Strong visual response under direct illumination • Balanced contrast between structured outer zones and diffused internal core • Natural inclusions contributing to depth and geological authenticity • Compact morphology with clear natural formation features • Distinct internal architecture rather than uniform colour distribution • Untreated specimen in original natural condition COLLECTOR’S INTEREST: For collectors, this specimen stands out through its clearly readable internal zoning, a feature that is increasingly valued when it appears with such structural clarity. The contrast between the darker outer rim, the more saturated intermediate zone and the softly diffused core creates a natural composition that is both visually engaging and geologically informative. Rather than relying purely on colour intensity, the appeal of this piece lies in its internal organisation and light behaviour. It offers a layered reading of crystal growth, making it particularly interesting for collectors who appreciate formation processes as much as aesthetics. LAPIDARY POTENTIAL: While the material presents zones of translucency that could technically allow for cutting, any lapidary intervention would eliminate the concentric zoning that defines the identity of this specimen. The relationship between rim, intermediate zone and core would be lost entirely. For this reason, the piece holds significantly greater value as a natural crystal section rather than as cutting rough, preserving its structural and visual integrity. ——————— Shipping and Handling: All orders are shipped by Portuguese National Post and UPS • Dispatch time: within 1 to 3 business days after payment confirmation to Catawiki • Transit time service: between 2 to 5 business days within europe and worldwide, depending on destination national post. • A tracking number is always provided Photography and transparency: All photos were taken under controlled light conditions, carefully selected to reproduce the most accurate natural color of each specimen. No filters, color enhancement, or artificial saturation were applied. The lighting setup is used exclusively to represent the piece as it appears under neutral daylight, ensuring that buyers can appreciate its true tones and luster without distortion. Identification and ethics: All specimens offered are guaranteed natural and as described. Their origin and mineral identification are provided with the most accurate and reliable information available. Every effort is made to ensure that each piece is presented with full transparency, avoiding any misleading details regarding its nature, treatment, or provenance. Customs and import taxes: Any customs duties, import fees, or local taxes applied by the destination country are entirely the responsibility of the winning bidder. These charges are not included in the auction price or shipping cost and are determined by the buyer’s local authorities. Guarantee and resolution: Customer satisfaction is a priority. In the event of any issue, such as loss, damage, or discrepancy, please contact us immediately through Catawiki’s messaging system. We will always find a fair and suitable solution, including refund, replacement, or other commercial arrangements whenever justified. Appreciation and commitment: We sincerely thank you for your trust and preference. Our goal is to continuously bring you some of the most beautiful, unique, and exceptional mineral specimens from around the world. Each piece is carefully selected for its quality and character, ensuring that every purchase meets the highest standards. Your satisfaction and confidence are our top priorities, and we will always strive to exceed your expectations with every order. With gratitude, GemPulse Minerals