Tanzanite Plain Rondelles measure approximately 4mm up to 7mm in diameter, gems have a glass like luster, exhibit excellent polish on symmetrical rondelle shapes, the widths are consistent throughout the strand, these pleochroic beads are a slight grayish and purplish tone on strand, beads show a varied color group, and have a brilliant purplish medium light Blue hue with internal features in this group of Tanzanite beads. A Quality due to their make, larger than average size, and tonal matching on the strand.