**Complimentary Specimens** As a gesture of appreciation, every winning lot above €50 will include one extra mineral, added entirely free of charge. For each additional €50, another complimentary specimen will be added. ————————- Description: This Herkimer Diamond reveals a character that unfolds slowly, almost deliberately, rewarding careful observation. At first glance, it presents itself as a clear and well defined crystal, naturally formed and sharply terminated, its geometry crisp and confident. Yet its true essence lies within. Encased inside the crystal is a rare and mesmerising phenomenon. Under ultraviolet light, the stone awakens with an electric blue fluorescence, a living glow born from ancient petroleum trapped within microscopic fractures and cavities. This is not surface colour nor treatment, but a geological memory sealed millions of years ago and preserved in crystal. The most striking feature of this specimen is an internal blue spiral, clearly visible near the upper termination. This spiral appears suspended in motion, like a celestial vortex frozen in time, drawing the eye inward and becoming the unmistakable focal point of the crystal. It is a natural formation of exceptional visual impact, rarely so well defined and centrally positioned. Across the interior, fine veils, wispy textures and subtle internal fractures scatter light gently, creating depth and movement without compromising the overall transparency. The terminations remain sharp and well proportioned, enhancing the crystal’s presence whether viewed under daylight or ultraviolet illumination. This is a Herkimer Diamond that tells a complete story. From its clean external form to its luminous inner world, it stands as both a mineral specimen and a natural artwork shaped by pressure, time and chemistry. Specifications: • Weight: 0.73 g • Weight in carats: 3.65 ct • Dimensions: 15 × 11 × 6 mm • Origin: Waziristan, Pakistan • Mineral: Herkimer Diamond Crystal form: Naturally formed crystal • Transparency: Transparent with internal inclusions • Lustre: Vitreous • Fluorescence: Strong blue under UV due to petroleum inclusions • Inclusions: Petroleum filled cavities internal veils and natural fractures • Treatment: Fully natural untreated specimen Notable Points: • Presence of a vivid internal blue spiral near the upper termination, a rare and visually striking natural formation • Strong electric blue ultraviolet fluorescence caused by genuine petroleum filled inclusions • Clear and well defined crystal faces with sharp natural terminations • Internal veils and fine fractures that create depth and dynamic light interaction • Excellent contrast between daylight transparency and ultraviolet transformation • Petroleum inclusions confirmed visually through fluorescence behaviour • A specimen that combines scientific rarity with strong aesthetic impact Collector’s Interest: Petroleum Herkimer Diamonds are highly sought after for their dramatic ultraviolet response and geological rarity. This specimen elevates itself further through the presence of a clearly defined internal spiral, a feature that transforms it from a fine fluorescent crystal into a true conversation piece. Its balanced proportions, clarity and internal structure make it especially attractive to collectors who value both aesthetics and mineralogical authenticity. Lapidary Potential: While unquestionably a collector specimen, the crystal offers sufficient clarity and internal interest to inspire artistic lapidary projects. Any cutting approach would need to respect the internal spiral and petroleum inclusions, potentially resulting in a unique UV reactive gem or display piece designed to showcase its internal glow rather than conventional brilliance. ————— Shipping and Handling: All orders are shipped by UPS express or National Express. • Dispatch time: within 1 to 2 business days after payment confirmation to catawiki • Transit time with Express service: up to 3 business days within europe and worldwide • 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 colour of each specimen. No filters, colour enhancement, or artificial saturation were applied. The lighting setup uses a calibrated 5500K light source, which replicates neutral daylight and reveals the true tones and clarity of the mineral. Under weaker or more yellow indoor lighting, colours may appear slightly different, which is normal and expected. The purpose of this setup is to present each specimen exactly as it appears in balanced natural daylight, allowing buyers to appreciate its authentic colour and lustre 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