Size/ 4.0mm-3.5mm Luster/ ☆☆☆☆☆☆ Surface perfection / ☆☆☆☆☆ Place of production/ Mie, Japan The luster and surface perfection of our pearls use the ☆ mark. Six stars are the best (more stars the stronger luster and less imperfections) We don't sell pearls below three stars. Six stars or more is considered top grade. Feel free to ask me for top grade pearls and we have them all available.