DESCRIPTION: This exceptional natural rough diamond immediately attracts attention through the abundance of well developed triangular crystallographic formations distributed across its surface. These sharply defined geometric structures create an unusually complex relief pattern, giving the specimen a highly distinctive mineralogical character while providing direct evidence of its natural crystal growth history. The crystal presents a compact rounded freeform morphology, yet its surface is dominated by a remarkable network of triangular crystallographic features visible across multiple areas of the specimen. These formations generate a repeating geometric architecture that enhances both visual complexity and collector appeal, transforming the diamond into a highly expressive natural crystal rather than a simple rough gemstone. Its colour is distinctly white, displaying a clean and neutral appearance free from noticeable colour bias. This purity of tone enhances the visibility of the crystallographic structures and allows light to interact freely with the surface, producing bright flashes of adamantine lustre throughout the specimen. The surface is composed of natural micro crystalline textures, growth features and well developed triangular relief structures that scatter light dynamically across the stone. These features create numerous reflective points, generating sharp flashes of brilliance that continuously evolve as the viewing angle changes. Under magnification, the intricate crystallographic landscape becomes even more apparent, revealing a level of detail rarely encountered in material of this size. Under backlighting, the diamond becomes particularly expressive. Light penetrates the outer portions of the crystal and activates the internal structure, increasing brightness while revealing additional depth between the various crystallographic formations. The result is a luminous appearance where reflection, diffusion and surface geometry combine to create a highly engaging visual effect. Transparency is moderate, allowing sufficient light transmission to enhance brilliance while preserving the solid visual presence of the crystal. This balance produces an optical behaviour where internal luminosity and external reflections coexist harmoniously, reinforcing the natural beauty of the specimen. Recovered from the alluvial diamond fields of Lunda Norte in Angola, this specimen remains completely natural, unpolished and untreated, preserving its original morphology, crystallographic features and optical character exactly as formed by nature. This is not simply a white rough diamond. It is a remarkably expressive crystallographic specimen where geometry, lustre, purity and geological authenticity converge within a compact and highly collectible natural crystal. SPECIFICATIONS: • Weight: 0.05 g • Weight in carats: 0.25 ct • Dimensions: 4.5 × 4 × 4 mm • Origin: Lunda Norte, Angola • Gem material: Natural diamond • Crystal form: Natural rough crystal • Morphology: Rounded freeform crystal with pronounced triangular crystallographic formations • Colour: White • Colour distribution: Even and clean • Transparency: Translucent • Lustre: Adamantine • Surface features: Natural growth textures, micro crystalline relief and triangular crystallographic structures • Treatment: None • Condition: Natural, unpolished, untreated NOTABLE POINTS: • Distinct triangular crystallographic formations Clearly visible geometric structures distributed across multiple crystal surfaces. • Exceptional crystallographic character Surface architecture displays remarkable mineralogical complexity. • Pure white body colour Clean and neutral tone with no visible colour bias. • Strong reflective brightness High light return creates a vivid and crisp visual presence. • Dynamic light interaction Micro crystalline surfaces create numerous reflective points. • Adamantine lustre expression Sharp flashes of light across natural crystal planes. • Enhanced under backlighting Internal brightness increases when illuminated from behind. • Natural surface texture Growth patterns and crystallographic relief enhance optical complexity. • Moderate translucency Allows partial light penetration without losing visual solidity. • Fully natural specimen No cutting, no polishing, no treatment. • Angolan origin Consistent with alluvial diamond material from Lunda Norte. • Strong visual clarity Clean appearance enhances perception of quality. • Compact but impactful presence Size combined with brightness creates strong display value. • Rarely encountered surface geometry Triangular formations create a distinctive visual identity. • Collector grade natural diamond Combines purity, lustre, geometry and natural form. COLLECTOR’S INTEREST: White diamonds in rough form offer collectors a direct view into the natural processes responsible for diamond growth and preservation. Without the intervention of cutting or polishing, the crystal retains the original features that document its geological history, allowing its natural architecture to remain fully visible. This specimen stands apart through the abundance of triangular crystallographic formations distributed across its surface. These geometric structures introduce a level of mineralogical interest that extends well beyond colour and transparency alone, transforming the crystal into a specimen that rewards both casual observation and detailed examination under magnification. The combination of clean white colouration and highly developed surface relief is particularly attractive. The absence of distracting colour allows the eye to focus entirely on the interplay between crystallographic geometry, lustre and reflected light. As illumination conditions change, different aspects of the surface become visible, giving the specimen a dynamic and evolving visual character. Collectors of natural rough diamonds are increasingly drawn to specimens that preserve strong crystallographic expression, and this example achieves that exceptionally well. Its combination of purity, surface complexity, optical responsiveness and Angolan provenance places it firmly within collector grade territory. LAPIDARY POTENTIAL: Although the stone could technically be considered for cutting, doing so would inevitably remove the crystallographic formations, surface textures and growth features that define its individuality and collector value. The triangular crystallographic structures visible across the surface constitute one of the specimen’s most important attributes. Any faceting or reshaping would eliminate this natural architecture and significantly reduce the mineralogical interest of the piece. Its highest value therefore lies in preservation as a natural rough diamond, where its crystallographic geometry, optical behaviour and geological authenticity remain fully intact for study, display and collection. ——————- 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 photographs are taken under controlled lighting conditions using a macro lens, carefully selected to present each specimen as accurately as possible. No filters, colour enhancement, or artificial saturation are applied. The lighting setup uses a calibrated 5500K light source, replicating neutral daylight to reveal natural tones, surface features, and internal characteristics. Under warmer or weaker indoor lighting, colours may appear slightly different, which is normal. The purpose of this photographic process is documentation and representation, not visual enhancement. Images are intended to reflect the specimen faithfully as it appears under balanced natural light conditions. Identification and ethics: All specimens offered are natural and described to the best of our knowledge, based on direct sourcing, professional experience, and information provided by trusted suppliers working at the origin. Every effort is made to ensure transparency and accuracy regarding identification, locality, and general characteristics, avoiding misleading statements about treatment, provenance, or nature. 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 important. In the unlikely event of an issue such as loss, damage, or discrepancy, please contact us promptly through Catawiki’s messaging system. Each case is handled individually and fairly, with appropriate solutions offered when justified. Appreciation and commitment: We sincerely thank you for your trust. Our work focuses on careful selection, accurate representation, and respectful presentation of mineral specimens with character and interest. Each piece is chosen for its individual qualities rather than speculative or financial considerations. We aim to provide a transparent, reliable, and consistent experience for collectors at all levels. With gratitude, GemPulse Minerals