Gold Mine Sparkle, Gold Mine Brilliance, and Gold Mine Chatoyant. The stone has areas that are highly chatoyant similar to pietersite or tiger's eye. Translucent yellowish chatoyant chrysoberyl is called cymophane or cat's eye. When the schiller forms an indistinct band, it is said to display a chatoyant effect. Transparent stones of clean color have been faceted, and chatoyant specimens have been cabochon-cut. Fibre optic glass beads have an eyecatching chatoyant effect across the grain. The stellate masses tend to be chatoyant, meaning they have a varying luster. Chatoyant minerals display luminous bands, which appear to move as the specimen is rotated. Another gem variety is the chatoyant form known as "cat's-eye actinolite".