**Complimentary Specimens** As a gesture of appreciation, winning lots with a final hammer price above €50 will include one small additional mineral offered entirely free of charge. —————— Description: Like a shard of ancient olive light lifted from deep river gravels, this fantastic and rare Vivid Olive Green diamond commands attention through both colour and architecture. Its presence is immediate and distinctive, defined not by symmetry alone, but by a naturally sculpted triangular form that feels deliberate in its geometry and powerful in its stance. The body colour reveals a saturated olive green with vivid intensity. Unlike lighter greenish modifiers, this tone carries depth and density, blending green dominance with subtle golden undertones that enrich rather than dilute the overall expression. Under neutral lighting, the stone projects a stable olive character. When exposed to stronger directional light, the internal body awakens with a richer chromatic depth, intensifying toward a more concentrated green core while maintaining clarity and cohesion. Its rare triangular morphology sets it apart structurally. The outline forms a natural three sided silhouette with softly defined edges and gently rising planes that converge toward a subtly elevated apex. The surface retains raw growth texture across each face, composed of tightly packed micro elevations and natural relief patterns that follow the triangular geometry. These textural structures are not chaotic; they appear layered and directional, reinforcing the architectural identity of the stone. Light interaction is particularly compelling. The natural micro planes generate sharp, high contrast flashes characteristic of diamond’s adamantine lustre. Reflections gather along the raised ridges and relief lines, producing crisp scintillation even without polishing. The triangular shape enhances this behaviour, creating dynamic shifts in brightness as the stone is rotated. Transparency remains translucent, allowing controlled light penetration through the body. This contributes to a layered visual depth rather than surface only reflection. The olive tone remains consistent throughout the mass, with no abrupt zoning or disruptive colour fragmentation. Recovered from the historic alluvial deposits of Lunda Norte, Angola, this diamond carries the geological authenticity associated with one of the world’s most important coloured diamond regions. Ancient river systems naturally selected and preserved stones with stable colour and intact growth character. This specimen remains entirely untreated, preserving both its vivid olive identity and its rare triangular architecture in pure natural form. Its rarity lies in the convergence of vivid olive green colour and triangular morphology, a structural and chromatic pairing seldom encountered in natural rough diamonds of this size. Specifications: • Weight: 0.04 g • Weight in carats: 0.20 ct • Dimensions: 3.5 × 3.5 × 1.5 mm • Origin: Lunda Norte, Angola • Gem material: Natural diamond • Crystal form: Natural triangular rough crystal • Shape character: Rare natural triangular morphology • Colour: Vivid Olive Green • Colour distribution: Even and cohesive • Transparency: Translucent • Lustre: Adamantine • Surface features: Natural growth textures with layered micro relief • Condition: Natural, unpolished, untreated Notable Points: • Rare natural triangular crystal morphology • Strong vivid olive green saturation • Balanced chromatic depth with subtle golden undertones • Even colour distribution without disruptive zoning • Dynamic light response across triangular planes • High adamantine flashes on natural micro surfaces • Sculptural silhouette with stable geometric identity • Translucent body allowing internal depth perception • Authentic Angolan alluvial provenance • Untreated and fully preserved natural form • Compact size with disproportionately strong visual presence • Distinctive morphological expression within coloured diamond category Collector’s Interest: Vivid olive green diamonds occupy a highly specialised niche within natural coloured diamond collecting. When combined with a naturally formed triangular morphology, the result becomes even more compelling. This specimen offers collectors an intersection of structural rarity and chromatic intensity, anchored by Angolan geological credibility. It appeals particularly to those who prioritise unusual natural architecture alongside stable, saturated colour expression. Lapidary Potential: The vivid olive saturation suggests strong colour retention potential should cutting ever be considered. However, the triangular morphology and preserved natural growth relief provide intrinsic specimen value in their untouched state. Any alteration would remove the rare architectural identity that currently defines the stone. As preserved, it stands as both a chromatic rarity and a morphological study piece. ——————- Shipping and Handling: All orders are shipped by Portuguese National Post. • Dispatch time: within 1 to 3 business days after payment confirmation to Catawiki • Transit time with CTT service: between 5 to 7 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