Stunning TanzanitePlain Rondelle Beads measure approximately 3.5mmto 4.5mm in diameter, gemstones have a glass like luster showing excellent polish, and a symmetricalunfacetedrondelle shape for these brilliant transparent beads. These Tanzanite beads are well matched forrichly saturated violet and blue hueson the strand due to thepleochroicnature of Tanzaniteand showvery few internal characteristics. AAA Quality