Tanzanite Plain Petite Rondelles measure approximately 2.5mm average in diameter, gemstones have a glass like luster showing excellent polish, symmetrical plain rondelle shapes for these transparent beads, these Tanzanite beads are well matched for a slightly Violetish tone on strand, gems have lightly saturated pleochroic hues with slight internal characteristics, and these Tanzanite beads provide for a light blue hued strand of well made Tanzanite rondelles in a petite size.