π 15% Impregnated Black Opal w/ Red Fire β Dramatic Crimson Play-of-Color on a Dark Body This lab-created opal is formed from microscopic silica spheres arranged into the precise, repeating lattice that gives opal its signature play-of-color, then infused with polymer resin (approximately 15%). A deep, dark body tone serves as the perfect backdrop for vivid, directional flashes of crimson fire, which ignite with striking intensity and shift across the stone as it turns. The 15β20% resin content places it in the middle of our opal lineup β more resilient and forgiving to cut than resin-free opal, yet harder and more durable than the high-resin Aurora material, and it takes a clean polish for both faceting and cabbing. Red is the rarest and most coveted of all opal fire colors, and paired with a black body it delivers maximum contrast and visual punch β a true showpiece material for faceted stones, cabochons, inlay, and statement jewelry. β¨ Key Features: Body Color: Deep black β the ideal dark backdrop for maximum fire contrast Fire / Play-of-Color: Vivid red β the rarest and most sought-after opal fire color Pattern: Directional flashes with rich, broad spectral hues Composition: Silica with approximately 15β20% polymer resin (~15%) Workability: More resilient and forgiving to cut than resin-free opal, yet harder and more durable than high-resin Aurora material β suitable for both faceting and cabbing Hardness: ~4 on the Mohs scale β best suited for faceted stones, cabochons, and inlay in protected settings Heat Resistance: Up to ~140 Β°C (284 Β°F) β keep cool, low heat only Best For: Faceting, cabbing, inlay, intarsia, and statement jewelry A standout for anyone chasing the boldest, highest-contrast opal display. Each piece is sold by weight. πΈ Additional Notes: Because this material contains resin, it has a heat limit around 140 Β°C (284 Β°F) β cut and polish wet, keep it cool, avoid ultrasonic cleaners, and use a cold dop or low-heat method rather than hot dop wax. If you would like to see additional pictures of the piece(s) you're interested in, please feel free to contact me. I'll be happy to provide more images for your review. The color of the stone in the photo may vary slightly, as not all computer monitors are calibrated the same.