opal crystal, artificial of the shimmering mineral, arranged and presented in a dark cave, made with generative ai

opal crystal mineral shimmering artificial illustration arranged presented dark cave geology iridescent silica playofcolor precious gemstone hydrophane fire white black boulder doublet triplet australia mexico brazil peru ethiopia opalescence diffuse light translucent stone mineralogy structure crystalline lattice petrography crystallography gem semiprecious jewelry generative made ai