Shop This A Grade Smooth Wheel Shape 8.5-15mm Natural Blue Opal Gemstone Beads Strand. You Will Receive Approx. 90 Pieces on 16 Inch. Long Center Drilled Strand. This Blue Opal Stone is Sourced From Australia. To The Best Of Our Abilities, We Strive To Provide Images Of Our Natural Gemstones That Are As Accurate To Their Real-Life Appearance As Possible In Terms Of Color and Pattern. However, Given That They Are All Products Of Nature, There May Be Slight Differences.