Peruvian Blue Opal plain round beads have a waxy luster, exhibit great polish, show a symmetrical round shape, have excellent depth of color, and are well matched for quality throughout the strand. These Blue Opal plain rounds exhibit moderately dark, beautiful brown and tan matrix hues with bead color ranging from a dark strongly greenish blue hue to a medium olive green hue to a medium light grayish blue hue. These Peruvian Blue Opal rounds are an opaque quality mined from Andes Mountains of Peru. AA grade