*Radiance Level Disclaimer* At GeoPulse Minerals, we use our own internal classification system to evaluate the light performance of Mexican Fire Opals. This system is based exclusively on the intensity, stability and chromatic strength of the fire, play of colour, displayed by each specimen, as follows: Radiance Level I – Soft Glow Gentle internal light with delicate colour movement. Radiance Level II – Bright Glow Noticeable radiance with stable brightness and defined flashes. Radiance Level III – Intense Radiance Strong, vivid fire with powerful colour response from multiple angles. Radiance Level IV – Flame Radiance Top tier. Maximum intensity, highly saturated flame like play of colour and exceptional optical behaviour. This scale allows collectors to immediately understand the visual strength and rarity category of each opal we present. —————— Radiance Level IV - *FLAME RADIANCE* DESCRIPTION: Not every day does nature decide to reveal its most incandescent secret. And not every submission carries the authority to redefine an entire category. This is, without exaggeration, the most extraordinary Mexican Fire Opal ever submitted by GemPulse Minerals. It is the largest specimen we have presented to date, and unquestionably the most internally spectacular. A true flagship piece. A crown jewel among Mexican Fire Opals. Formed within the volcanic deposits of Magdalena, Jalisco, Mexico, this opal represents fire captured in mineral form. Yet this is not the familiar narrative of molten lava or flowing magma. What we see here is something rarer, something more intimate: a suspended combustion of light, a contained eruption of internal energy structured into a luminous core of astonishing complexity. But what elevates this specimen is the internal architecture of its core. Under direct illumination, the interior awakens in a phenomenon that can only be described as a living fire chamber. The core displays an extraordinary “bubble like” structure, an intricate constellation of rounded internal formations that appear suspended in translucent orange gold. These micro domed structures create a three dimensional depth rarely encountered in fire opals. It is as though the stone contains a chamber of glowing embers captured mid formation. In extreme macro view, the internal scene becomes unforgettable. The surface of the fire zone reveals layered, clustered formations resembling incandescent spheres, tightly packed yet individually distinct. This is not diffuse colour. It is structured luminosity. A dynamic internal core that radiates with intensity and cohesion. The colour palette moves through deep ember red, saturated orange, and molten gold tones. As light shifts, the fire concentrates and expands across the internal chamber, creating zones of heightened brilliance. The response is immediate, powerful, and stable under frontal light. This is not a weak or dependent fire requiring backlighting. The activation occurs directly, confidently, and consistently. The opal is cut in a remarkably clean and refined cabochon style, creating what can only be described as a gemstone grade fire window. The curvature is balanced and elegant, allowing light to enter and interact optimally with the internal core. The polished surface is smooth and uninterrupted, enhancing both brilliance and structural clarity. The surrounding host remains partially preserved, acting as a natural frame. This contrast between pale volcanic matrix and incandescent fire chamber intensifies the perception of depth and saturation. Rather than distracting from the fire, the host sharpens it, containing the energy within a defined and powerful window. This is not merely a Mexican Fire Opal. It is a definitive example of what the material can achieve at its highest level of expression. Size, intensity, internal structure, and optical performance converge in a single specimen. For the delight of collectors, this stands as the largest and most visually spectacular Mexican Fire Opal GemPulse has ever offered. SPECIFICATIONS: • Pattern: Structured bubble like internal core within polished fire window • Colours present: Deep ember red, saturated orange, molten gold • Weight: 2.73 g • Weight in carats: 13.65 ct • Dimensions: 21 × 16 × 9 mm • Origin: Magdalena, Jalisco, Mexico • Material: Natural Mexican Fire Opal • Radiance Level: IV – Flame Radiance • Optical behaviour: Strong frontal light activation with structured internal depth • Transparency: Translucent fire chamber within semi opaque host • Lustre: Vitreous on polished fire surface • Treatment: None • Form: Refined cabochon style fire window with partially preserved host NOTABLE POINTS: • Largest Mexican Fire Opal ever submitted by GemPulse Minerals This specimen surpasses all previous submissions in scale, measuring 21 mm in length and weighing 13.65 carats. • Exceptional structured internal core The interior displays a rare bubble like formation pattern, creating a three dimensional luminous chamber rather than diffuse colour. • Gemstone grade fire window The polished cabochon surface is clean, balanced, and optimally curved for maximum frontal light interaction. • Intense frontal activation Fire ignites under direct illumination without reliance on backlighting, demonstrating high chromatic density and internal cohesion. • Deep ember to molten gold chromatic range The colour transitions dynamically between red, orange, and golden zones, enhancing depth and movement. • Strong contrast with preserved host The pale volcanic matrix frames the fire chamber, intensifying saturation and visual containment. • Macro level structural complexity Under magnification, the internal formations reveal clustered spherical textures rarely seen at this scale. • Radiance Level IV – Flame Radiance Classification reflects both intensity and consistency of fire under normal viewing conditions. • Fully natural and untreated No dyeing, stabilisation, or artificial enhancement. COLLECTOR’S INTEREST: Advanced collectors recognise that true greatness in Mexican Fire Opal lies in three converging factors: scale, structural fire coherence, and optical performance under frontal light. This specimen achieves all three simultaneously. Its size alone makes it exceptional within the category. However, the structured internal core elevates it into a rarer class. The bubble like chamber effect is seldom seen with such clarity and dimensional depth, especially in a specimen of this magnitude. For collectors seeking a centrepiece rather than a supporting stone, this is the type of opal that defines a collection rather than complements it. LAPIDARY POTENTIAL: While already cut in a refined cabochon style, this opal possesses significant jewellery potential due to its strong frontal activation and controlled curvature. Open-backed pendants or protective bezel settings would allow full fire expression under natural light conditions. Any further reshaping should remain minimal, as the current fire window is optimally positioned and proportioned. However, its true value may lie in remaining exactly as it is: a museum grade natural fire opal showcasing the most powerful internal core ever offered by GemPulse Minerals ————— 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