Description: This extraordinary Watermelon Tourmaline slice from the renowned Jonas Mine in Conselheiro Pena, Minas Gerais, Brazil, presents one of the most visually striking examples of concentric chromatic zoning found in elbaite tourmaline. Suspended within a sharply defined triangular section, the specimen reveals a luminous internal architecture where colour appears organised in successive natural layers, almost like a living nucleus encapsulated within crystalline matter. At the centre lies an exceptionally vivid neon pink core, saturated and electrically expressive, displaying intense raspberry and hot pink tonalities that seem to radiate outward from within the crystal itself. Unlike ordinary watermelon tourmalines where the centre may appear flat or opaque, this nucleus possesses a remarkable internal luminosity, enhanced by delicate fibrous growth textures and translucent diffusion that create an almost glowing visual effect under direct illumination. Encircling this vibrant centre is a soft white transitional halo, forming a distinct concentric aura between the inner nucleus and the outer rim. This pale intermediate zone is especially important mineralogically, as it records a transitional stage in the crystal’s chemical evolution during growth. The contrast between the vivid pink interior and the milky white boundary creates an almost atmospheric separation, as though the neon core were suspended inside its own crystalline field. The outermost zone develops into a richly saturated lime green rim, displaying olive green to yellow green tones under ambient light, yet transforming dramatically into an electrified neon lime when struck by direct or transmitted illumination. This optical transformation is particularly exceptional in this specimen. Under strong backlighting, the green perimeter ignites with intense fluorescence like saturation, creating a vivid chromatic contrast against the burning pink centre and reinforcing the classic “watermelon” appearance that made these tourmalines internationally iconic among collectors. What further elevates this specimen is the geometry of the slice itself. The crystal preserves its natural trigonal cross section with softly rounded triangular proportions and subtly uneven boundaries that document its original prismatic habit before sectioning. Fine longitudinal growth striations remain visible along the outer edge surfaces, preserving evidence of the crystal’s original vertical development within the pegmatitic environment. Internally, delicate inclusions and natural growth textures are suspended throughout the slice without compromising transparency or colour readability. Instead, they enhance the organic complexity of the specimen, preventing it from appearing overly sterile while preserving exceptional visual balance between translucency, saturation, and structural clarity. Pieces of this quality are admired not merely because they display multiple colours, but because the zoning remains extraordinarily legible and harmonious. In this example, the transition from neon pink nucleus to white halo and finally into luminous lime green unfolds with unusual precision, creating a natural composition that feels simultaneously geological and almost artificially designed. Under magnification and directional lighting, the specimen becomes even more captivating, revealing subtle internal crystalline textures that interact dynamically with light transmission. The result is a miniature chromatic landscape where colour, transparency, and structure coexist in remarkable equilibrium. Specifications: • Weight: 0.87 g • Weight in carats: 4.35 ct • Dimensions: 10 × 10 × 4.5 mm • Origin: Jonas Mine, Conselheiro Pena, Minas Gerais, Brazil • Mineral species: Tourmaline • Variety: Watermelon Elbaite Tourmaline • Crystal system: Trigonal • Form: Natural polished crystal slice • Structure: Concentric colour zoning • Core colour: Neon vivid pink • Transitional zone: White to milky halo • Outer rim colour: Lime green to yellow green • Optical behaviour: Strong neon lime response under transmitted light • Transparency: Translucent to locally transparent • Lustre: Vitreous • Treatment: None • Condition: Natural intact slice Notable Points: • Exceptionally vivid neon pink nucleus with intense internal luminosity • Highly defined concentric zoning displaying remarkable structural readability • Distinct white transitional halo naturally separating the core from the outer rim • Electrifying lime green outer zone with dramatic colour activation under backlighting • Strong optical contrast between the saturated centre and luminous perimeter • Excellent transparency allowing deep internal light penetration • Natural trigonal slice geometry preserving the original crystal proportions • Fine longitudinal growth striations visible along the outer edges • Delicate internal inclusions enhancing natural character without disturbing aesthetics • Exceptional chromatic balance between pink, white, and lime green phases • Dynamic visual transformation depending on lighting conditions • Strong saturation combined with soft internal diffusion creating depth and glow • Highly photogenic specimen with museum quality colour architecture • Crystal growth history remains clearly observable through concentric development • Premium collector example of classic Brazilian Watermelon Tourmaline formation Collector’s Interest: Watermelon Tourmalines displaying such intensely legible zoning and vivid neon saturation are increasingly uncommon, particularly in smaller specimens where balance and symmetry are often lost. This example stands out not only because of its chromatic intensity, but because each concentric phase remains exceptionally clean, coherent, and visually separated. The relationship between the glowing pink nucleus, the ethereal white halo, and the luminous lime green perimeter creates a composition that feels almost biological in appearance, more reminiscent of a living structure than a mineral section. Under illumination, the specimen reveals dramatically different personalities, shifting from calm olive transparency to explosive neon contrast. Specimens from the Jonas Mine are especially prized due to the locality’s historical importance in producing some of the world’s most visually refined elbaite tourmalines. In this piece, colour chemistry, structural preservation, transparency, and optical behaviour coexist in rare equilibrium, making it both scientifically fascinating and aesthetically extraordinary. Lapidary Potential: Although the transparency and saturation could technically allow lapidary experimentation, any cutting would irreversibly destroy the concentric zoning that defines the specimen’s identity and collector value. Its greatest importance lies precisely in the preservation of its natural chromatic architecture, where the neon pink core, white halo, and lime green rim remain fully intact and perfectly observable. As such, the specimen achieves its highest expression not as faceting material, but as a preserved collector slice showcasing one of nature’s most extraordinary colour zoning phenomena. ——————— 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