Blue Peruvian Opal faceted rondelles measure approximately 4mm, beads exhibit a vitreous luster, excellent cut, polish and symmetrical shape, very few matrix areas are apparent with only slightly visible internal characteristics, and the body colors are an opaque milky to translucent white, a light to medium greenish blue translucent, a very light blue transparent, and light to medium bluish green translucent hue creating a pure white / colorless and lux sea blue / sea green color palette of extraordinary beauty. Magnificent Coloring and Quality!