Blue Peruvian Opal Micro Faceted Rondelle have a translucent to opaque nature with a range blues showing a waxy luster. Peruvian Opal is classified as Common Opal meaning that it does not have the ‘play of color’ or rainbow-like flashes of color. Mined exclusively in the Andes Mountains, Peruvian Opal is highly prized for its wide assortment of blue hues and its translucent quality which rival other stones for beauty.