6 x 3mm. These are A+ grade, Chinese turquoise rondell beads. They are 100% natural in color and stabilized. In order to make turquoise hard enough to use for jewelry making purposes, it must be stabilized.These pretties are highly polished. Their color ranges from a pale to a deeper blue. No two strands are alike. Stunning! This semi precious gemstone is said to be the stone of communication, helping those who have a fear of public speaking. In the same vein, turquoise is considered to be a stone of friendship, strengthening the bond between friends. These turquoise beads are very limited!!