Peruvian Blue Opal plain rounds have a waxy luster, exhibit good polish, show a symmetrical shape, have generous width, and are well matched for quality throughout the strand. These Blue Opal plain rounds exhibit moderate beautiful brown and tan matrix 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