Peruvian Blue Opal Faceted Rounds measure approximately 9mm average in diameter, the gems have a vitreous luster, exhibit good polish with areas of matrix and dendritic internal characteristics, good faceting for a symmetrical round bead, these opal beads have a semi-translucent to opaque transparency, the gems have a consistent quality throughout the strand, the Peruvian Opal bead colors range from a colorless to a medium strongly greenish blue hue for a very soothing group of Peruvian Blue Opals in the sought after round shape.