Incredible! Peruvian Blue Opalina and Matrix top drilled plain oval beads have a very slightly asymmetrical shape with wonderful thickness ranging from 3mm to 8mm creating a hefty group of expertly matched beads showing a consistent rich tone flowing throughout the graduated strand of opaque beads. These opal gems have a waxy luster and smooth polish complimenting the deeply saturated greenish blue turquoise hues & chocolate brown matrix areas with the best matching. AAA grade.