*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: At the heart of this Mexican Fire Opal lies a spectacle that feels almost geological in motion. From its central core, vivid tongues of fire appear to erupt outward, forming natural flame like structures that radiate from within the stone. These internal labaredas rise in saturated reds and incandescent oranges, creating the impression of a contained eruption suspended in time. The surrounding body gently frames this phenomenon, allowing the fire to dominate the visual narrative without dilution. Under frontal light, the opal displays a powerful internal animation, with colour concentrating toward the centre before expanding through translucent corridors. Yet it is when light is introduced from behind that the specimen reveals its true nature. The stone ignites entirely, transforming into a chamber of molten luminosity where fire seems to breathe and flow. The core becomes almost incandescent, as if the opal were briefly returned to its volcanic origin, releasing a deep and immersive glow that commands immediate attention. This behaviour is the defining signature of top tier Mexican Fire Opal. The stone does not merely reflect colour; it transmits it, allowing light to pass through and awaken every internal structure. Layers of ember, gold and molten orange overlap and interact, creating depth, movement and an unmistakable sense of internal pressure. It is a specimen that feels alive under illumination, expressive and elemental, offering an experience rather than a static display. Specifications: • Pattern: Central eruptive flame formation with radiating fire structures • Colours present: Intense fire red, molten orange, golden volcanic glow • Weight: 0.94 g • Carat weight: 4.70 ct • Dimensions: 14 × 10 × 4 mm • Origin: Jalisco, Mexico • Material: Natural Mexican Fire Opal • Radiance Level: IV – Flame Radiance • Colour play: Explosive internal fire with extreme response to transmitted light • Transparency: Translucent to semi transparent fire zones • Lustre: Vitreous to resinous • Treatment: None • Form: Natural polished opal Notable Points: • Central flame like fire erupting from the core • Exceptional backlit transformation into molten luminosity • Highly concentrated chromatic saturation • Strong depth and internal dimensionality • Fire structures clearly visible and naturally formed • Top tier Flame Radiance classification • Powerful visual identity under both direct and transmitted light • Natural fire concentrated toward the centre rather than dispersed • Volcanic internal architecture with chamber like colour zoning • Stable fire behaviour without colour washout under angle change • Strong specimen presence despite compact dimensions Collector’s Interest: Mexican Fire Opals displaying eruptive central fire of this intensity belong to the highest echelon of the category. The combination of structural fire concentration, explosive backlit behaviour and saturated volcanic colour places this specimen firmly within a range sought after by advanced collectors focused on optical strength and geological authenticity. Lapidary Interest: While already exceptional as a collector specimen, this opal may also appeal to expert lapidaries seeking dramatic transmitted light effects. Any jewellery application should prioritise open backed settings to fully unleash its molten glow, transforming light into a central design element. ————— 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. Shipping and handling: Orders are carefully prepared, with each stone individually protected and placed in a secure rigid box to ensure safe delivery. Shipments are made within 1 to 3 business days after payment confirmation, always with a tracking number provided to the buyer. Each order is handled with professional care from selection to dispatch, ensuring a smooth and trustworthy process. 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