labradorite rock slab with detailed internal cracks and iridescent effect. labradorescence in labdradorite mineral stone

labradorization natural rock labradorite stone labradorescence iridescent opalescence abstract adularescence anorthite brilliance cabochon calcium canadian colorful cracked crystal feldspar fibrous gemology gemstone glowing holographic ilmenite infix internal cracks light diffraction lustre madagascar metallic mineralogy mineraloid opalescent optical effect pattern phenomenon psychedelic rainbow slab rutile schiller shimmer sky blue solid spectrolite structure surface texture translucent triclinic