Tanzanite FacetedHeart Briolettes measure approximately 6x6mm up to 11x11mm in size, gems have a vitreous luster, exhibit a symmetricalheart shape, beads are well matched for a purplish blue tone on strand, the Tanzanite gems are transparent with moderate internal features, these Tanzanite beads have amedium dark saturation and brilliant quality, and these Tanzanite are a purplish blue pleochroic hue.