**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: As though a single pulse of manganese rich colour had ignited at the heart of a growing crystal and then been sealed forever beneath a ring of olive green, this refined watermelon tourmaline slice captures a moment of chemical transformation suspended in stone. The contrast is immediate and precise. A vivid magenta core radiates outward before yielding to a clearly defined green perimeter, forming one of the most recognisable zoning patterns in coloured minerals. At first glance, the internal architecture is clean and highly legible. This is a single crystal slice, cut perpendicular to the growth axis, preserving the concentric chromatic evolution characteristic of true watermelon tourmaline. The central core displays a strong pink to magenta tone, naturally saturated and structurally embedded, formed through manganese enrichment during the early stage of crystallisation. Surrounding the core, a transitional zone softens the colour into a lighter, more translucent pink. This intermediate layer allows light to diffuse inward, enhancing luminosity and giving depth to the central nucleus. Beyond this, a continuous green rim frames the structure with clarity. The green presents as olive to fresh yellow green, evenly distributed along the perimeter and representing a later growth phase under changing chemical conditions. Under transmitted light, the zoning becomes even more expressive. The magenta core intensifies, while the green rim reveals subtle internal variation, confirming natural growth zoning rather than any form of treatment. Fine internal features and natural inclusions are visible within the core, reinforcing authenticity and adding internal texture. The slice has been polished to reveal its internal structure while preserving the identity of the original crystal. The lateral surfaces retain visible longitudinal striations, anchoring the specimen in its prismatic origin and confirming uninterrupted crystal growth. Tourmalines from Minas Gerais is globally recognised for producing structurally clear and chromatically expressive watermelon species. This specimen stands as a clean and well balanced example of that formation, where colour, structure and growth history remain clearly readable. This is not merely a decorative slice, but a precise cross section of mineral evolution captured within a single crystal. Specifications: • Weight: 0.53 g • Weight in carats: 2.65 ct • Dimensions: 9 × 8 × 4 mm • Origin: Minas Gerais, Brazil • Mineral species: Tourmaline • Variety: Watermelon Tourmaline • Form: Natural crystal slice, polished section • Crystal orientation: Transverse slice perpendicular to growth axis • Colour zoning: Concentric radial zoning • Core colour: Vivid magenta pink • Intermediate zone: Lighter pink to translucent • Outer rim: Olive to yellow green • Transparency: Translucent with good transmitted light response • Lustre: Vitreous Notable Points: • Clean single core watermelon structure The central pink nucleus is well defined and clearly separated from the surrounding zones, allowing immediate visual readability. • Strong manganese driven magenta core The core displays natural saturation and depth, confirming genuine chemical zoning formed during early crystallisation. • Well defined concentric zoning The colour distribution follows a clear radial pattern, reflecting a stable and uninterrupted growth process. • Balanced chromatic contrast The relationship between the warm magenta core and the cooler green rim creates a visually harmonious yet striking composition. • Natural transitional diffusion zone A softer intermediate layer enhances light transmission and increases the perceived depth of the core. • Continuous green outer rim The external green zone records a later stage of growth under changing chemical conditions. • Visible internal features Natural inclusions and internal textures contribute to the authenticity and mineralogical interest of the specimen. • Preserved crystal characteristics Lateral striations remain visible, confirming the prismatic origin of the crystal. • Good light interaction Under backlighting, the zoning becomes more vivid and structurally defined. • Minas Gerais pegmatitic origin The specimen reflects the dynamic chemical conditions typical of Brazilian tourmaline deposits. • Compact and well balanced proportions The slice maintains strong visual presence with clear zoning despite its size. • Highly photogenic specimen The combination of colour contrast and internal structure makes this piece ideal for macro presentation. Collector’s Interest: Watermelon tourmaline slices are valued for the clarity of their zoning and the strength of their colour contrast. This specimen presents a clean and well structured single core, with clearly readable transitions between pink and green zones. Material from Minas Gerais remains among the most sought after globally, particularly when the zoning is well preserved and visually balanced as seen here. This piece offers both aesthetic appeal and mineralogical clarity, making it suitable for collectors focused on zoned crystals and pegmatitic growth structures. Lapidary Potential: Although the colour zoning is attractive, any further cutting would disrupt the concentric structure that defines the specimen. Its highest value lies in preservation as a natural slice, where the internal architecture remains fully visible and intact. ——————— 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