*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: From the volcanic lands of Jalisco in western Mexico, this triangular Mexican Fire Opal reveals itself as a natural prism of light, a gemstone where geometry and colour converge with remarkable intensity. Its softly domed triangular form feels intentional and balanced, a shape long appreciated by collectors for its symbolic strength and visual harmony. The outer body displays warm cream, blush and iron rich tones, forming an earthy shell that gently encloses the true spectacle within. At the centre of the cabochon, a precious opal pocket opens like a luminous window suspended inside the stone. Here, colour does not merely appear, it moves. Vivid electric greens ignite first, followed by flashes of yellow, amber and fiery orange, while deeper red sparks flicker between layers. Subtle violet and magenta accents emerge at certain angles, completing a full spectrum display that shifts continuously as the stone is rotated. The colours are not surface bound, they float within translucent layers, creating depth, motion and a strong sense of internal life. Under direct light, the opal responds with sharp, energetic flashes that feel almost crystalline in their precision. When illuminated from behind, the stone undergoes a dramatic transformation. The internal opal ignites into a glowing core, radiating warm golden light while the colour play intensifies and softens at the same time, revealing delicate transitions and hidden nuances that remain unseen under frontal lighting alone. This backlit effect reinforces the impression of a living flame captured inside stone. The triangular silhouette amplifies this behaviour beautifully. Each edge frames the colour window differently, allowing distinct chromatic expressions depending on orientation. The result is a gemstone that rewards slow observation, revealing new combinations of colour and light with every change in angle. This is a Mexican Fire Opal that communicates through movement, contrast and inner radiance rather than sheer size, making it both intimate and powerful. Specifications: • Pattern: Internal precious opal pocket with full spectrum colour play • Colours present: Electric green yellow amber orange red violet magenta cream iron tones • Weight: 1.02 g • Weight in carats: 5.10 ct • Dimensions: 14 × 13 × 4 mm • Origin: Jalisco, Mexico • Material: Natural Mexican fire opal with precious opal core • Radiance Level IV Flame Radiance • Transparency: Translucent body with transparent internal opal areas • Lustre: Waxy to silky • Treatment: None • Form: Triangular freeform cabochon • Condition: Natural, polished, untreated Notable Points: • Naturally formed triangular shape with strong visual balance • Precious opal present exclusively within the internal cabochon window • Full spectrum colour play visible depending on light direction • Dominant electric green flashes with red, yellow and orange fire • Subtle violet and magenta tones appearing at specific angles • Excellent depth with colours suspended within translucent layers • Strong response under direct light with sharp chromatic flashes • Dramatic transformation under backlighting with glowing internal core • Warm outer host tones creating natural contrast and framing • Smooth dome and well executed polish enhancing light behaviour • Highly photogenic from multiple orientations and lighting setups • One of a kind specimen with distinct identity and presence Collector’s Interest: Mexican fire opals from Jalisco are prized for their expressive colour behaviour and geological individuality, and this specimen exemplifies those qualities at a high level. The triangular form immediately sets it apart, while the internal precious opal pocket delivers a vivid and complete chromatic experience. Collectors drawn to opals that interact dynamically with light, rather than relying solely on surface pattern, will find this piece particularly compelling. Its combination of geometry, full spectrum colour and backlit performance places it firmly within the realm of serious collector material. Lapidary Potential: The stone has already been shaped and polished in a manner that fully respects its natural architecture and internal structure. Any further cutting would risk disrupting the precious opal pocket and the carefully balanced triangular form. Its highest value lies in preservation, either as a cabinet specimen or as the centrepiece of a bespoke jewellery design that celebrates organic geometry and internal fire rather than conventional symmetry. ————— Shipping and Handling: All orders are shipped by Portuguese National Shipping. • 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 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