Peruvian Blue Opal plain rondelle beads have a waxy luster, exhibit great polish, show a symmetrical shape, have excellent depth of color, show moderate areas of tan, white, brown matrix are, and are varied hues throughout the strand. These Blue Opalina exhibit dark strongly greenish blue and ultramarine blue hues for the majority of beads showing an opaque quality. Mined only from the Andes Mountains, Peru and are richly hued with natural Copper mineral content. A grade