Blue Peruvian Opal Faceted Rondelles measure approximately 9mm to 10mm diameter in size, the gems have a vitreous luster, exhibit excellent German faceting and polish with very slight internal characteristics, the gems are symmetrical in shape with a consistent mint green tone throughout the strand, the translucent color ranges from a light nearly colorless blue to a medium bluish green hue producing a soft and delicate appearance for a AA grade.