*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 fallows: 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 I - *Soft Glow* Description: A Mexican fire opal shaped naturally into a triangular form, displaying a gentle glow created within the volcanic cantera of Jalisco. This specimen reveals a small but vibrant window of colour, where soft amber lights shift toward brief flashes of green and red when the stone is turned under direct illumination. Although the radiance is subtle when compared to higher tier pieces, the internal scene is enriched by the presence of opal eggs which appear as rounded silica formations nestled inside the cavity. These natural structures add character, geological identity and a sense of depth rarely seen in smaller cantera opals. The surrounding matrix remains intact and organic, with quiet tones of grey and white that frame the inner colours and emphasise the triangular silhouette. This is a piece valued less for intense fire and more for its mineral architecture, its internal formations and its unusual shape which appeals to collectors who appreciate the raw and authentic expression of Mexican opal formation. Specifications: • Weight: 0.82 g • Carat weight: 4.10 ct • Dimensions: 12 × 10 × 6 mm • Origin: Jalisco Mexico • Material: Natural fire opal in matrix cantera opal • Radiance Level I - Soft Glow • Colour play: Gentle amber core with discrete green red flashes • Transparency: Opaque matrix with a single luminous internal window • Internal structures: Multiple opal eggs visible within the cavity • Treatment: None • Form: Natural triangular cantera cabochon Notable Points: • Natural triangular formation uncommon in cantera opals • Presence of opal eggs adding depth complexity and collector interest • Subtle but stable flashes of green and red under angled light • Organic grey white matrix contrasting with the warm internal tones • A geological specimen with strong structural appeal despite low radiance Collector Interest: This piece suits collectors who value uncommon shapes and internal structures over high intensity fire. The triangular form combined with clearly visible opal eggs gives the specimen individuality and scientific interest, making it desirable as a study piece or as part of a curated collection of authentic Mexican cantera opals. Lapidary Potential: Best suited for display as a natural specimen or as part of a minimalist jewellery setting that highlights its triangular silhouette and internal formations. The stone’s character lies in its structure rather than in strong colour performance. ——————— 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. 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