Pink Peruvian Opal Beads Straight Drill Hearts have a vitreous luster with fair polish and good faceting creating an asymmetrical shape, beads measure approximately 9x9mm to 12x12mm in size, Pink Peruvian Opal beads range from lightly yellowish pink to dark pink hue with black veining within the stones, and these semi-translucent to opaque gems show typical matrix characteristics features within the stone.